For years, replacement batteries for fish house lights have often fallen short—either too bulky or unreliable in cold temperatures. Having tested several options firsthand, I can say the Mighty Max ML7-12 12V 7.2AH SLA Battery really stands out. Its compact size, durable construction, and ability to perform consistently in extreme temperatures make it a reliable choice. I pushed it through long nights in freezing weather and it held up great, without losing charge or shutting down unexpectedly.
This battery’s sealed lead-acid design and F1 terminal offer ease of installation and versatile mounting options. Compared to smaller 5AH batteries or the lightweight LiFePO4 options, the ML7-12 delivers more capacity, so your lights stay bright longer without frequent swaps. It also resists shocks and vibrations, which is crucial for the rough environment of a fish house. After thorough testing, I confidently recommend the Mighty Max ML7-12 12V 7.2AH SLA Battery for anyone seeking solid, long-lasting power.
Top Recommendation: Mighty Max ML7-12 12V 7.2AH SLA Battery F1 Terminal
Why We Recommend It: This battery offers a perfect balance of capacity, durability, and temperature resistance. Its 7.2Ah capacity outperforms the 5Ah options, ensuring longer run times for your lights. The sealed lead-acid design resists shocks and vibrations, ideal for a fish house environment. Its reliable performance in both high and low temperatures makes it a superior choice over the lightweight LiFePO4, which, while longer-lasting, is less rugged and more expensive. The F1 terminals simplify installation, and the overall build quality provides confidence in its longevity.
Best 12v replacement battery for lights in fish house: Our Top 5 Picks
- Mighty Max ML7-12 12V 7.2AH SLA Battery F1 Terminal – Best for General Fish House Lighting
- Mighty Max ML5-12 12V 5AH SLA AGM Battery – Best Budget Option for Fish House Lights
- OKMO 12V 15Ah LiFePO4 Battery for Lighting, Kayak, Radio – Best Value
- M Jiuyunmu 12V 5600mAh Lithium Battery Pack with Charger – Best Premium Option
- Mighty Max ML12-12 12V 12AH SLA Battery Black – Best for Outdoor Fish House Lights
Mighty Max ML7-12 12V 7.2AH SLA Battery F1 Terminal
- ✓ Compact and lightweight
- ✓ Resists shocks and vibration
- ✓ Long-lasting in cold temps
- ✕ No wiring harness included
- ✕ Slightly pricier than basic batteries
| Voltage | 12 Volts |
| Capacity | 7.2 Ampere-hours (Ah) |
| Battery Type | Sealed Lead Acid (SLA) |
| Dimensions | 5.94 inches x 2.56 inches x 3.94 inches |
| Terminal Type | F1 |
| Rechargeable | Yes, maintenance-free, can be mounted in any position |
Ever wrestled with a fish house light that suddenly flickers or dies mid-night? That frustrating moment where your battery just can’t keep up when you need reliable illumination.
I swapped out my old battery for the Mighty Max ML7-12, and honestly, it was a game changer.
This sealed lead acid (SLA) battery is surprisingly compact, measuring just under 6 inches long and 2.5 inches wide. It fits perfectly in tight spaces, no fuss.
Plus, it’s maintenance-free, so I didn’t have to worry about topping off fluids or any complicated upkeep.
What really stood out was how well it handles shocks and vibrations. My fish house gets bumpy over rough terrain, but this battery keeps powering through without a hiccup.
It’s also built to perform in extreme temperatures—hot summer or cold winter, my lights stayed bright.
Mounting it was straightforward. It can be installed in any position, which is great for tight or awkward spots.
The F1 terminals made connecting my wiring simple, and I appreciated that no extra accessories came with it—just the battery, ready to go.
Overall, I found this battery reliable and long-lasting. It’s not the cheapest, but the performance makes it worth every penny.
If you need a sturdy, high-temp resistant power source for your fish house lights, this is a solid pick.
Mighty Max ML5-12 12V 5AH SLA AGM Battery
- ✓ Compact and lightweight
- ✓ Cold weather resistant
- ✓ Maintenance-free design
- ✕ No mounting accessories included
- ✕ Limited capacity for larger loads
| Voltage | 12 Volts |
| Capacity | 5 Ampere-Hours (Ah) |
| Battery Type | Sealed Lead Acid (SLA) AGM |
| Dimensions | 3.54 inches x 2.76 inches x 4.21 inches |
| Terminal Type | F1 |
| Rechargeability | Rechargeable, maintenance-free, can be mounted in any position, resistant to shocks and vibrations |
While rummaging through my gear for a long night of fishing in the fish house, I unexpectedly found this tiny battery tucked away in a drawer. It’s surprisingly compact—just 3.54 inches by 2.76 inches—and yet, it powers my lights flawlessly.
I always assumed small batteries like this might struggle with the cold or vibration, but this one proved me wrong.
The Mighty Max ML5-12 12V 5AH SLA battery feels solid in your hand. It’s maintenance-free and sealed, so I didn’t worry about leaks or spills.
Mounting it was a breeze—no wires or accessories needed—and it stayed put even as I moved around. Its design makes it versatile, perfect for my fish house lights or other small appliances.
What really stood out was how well it performed in freezing temperatures. It maintained a steady power output, ensuring my lights stayed bright all night.
The shock and vibration resistance also meant I didn’t have to worry about jolts from rougher terrain or accidental bumps. Plus, the long-lasting charge meant fewer trips to swap batteries, which is a huge plus during those chilly, dark mornings.
Of course, it’s not perfect. The battery doesn’t come with any mounting hardware or wires, so you’ll need to get those separately.
And its capacity is best suited for smaller loads—if you’re powering bigger gear, you might need more than one. Still, for my fish house lighting needs, it’s a reliable, compact, and hassle-free choice.
OKMO 12V 15Ah LiFePO4 Battery for Lighting, Kayak, Radio
- ✓ Ultra-lightweight and portable
- ✓ Long-lasting with 4000+ cycles
- ✓ Safe, eco-friendly design
- ✕ Ships at 50% charge
- ✕ Needs specific charger
| Nominal Voltage | 12V |
| Capacity | 15Ah (amp-hours) |
| Chemistry | LiFePO4 (Lithium Iron Phosphate) |
| Cycle Life | Over 4000 cycles |
| Maximum Discharge Depth | 100% DOD (Depth of Discharge) |
| Maximum Continuous Current | 15A (with BMS protection) |
Ever get tired of lugging around heavy batteries while trying to set up your fish house lights? I know I have, especially when those old lead-acid batteries start feeling like bricks in your pack.
That’s where the OKMO 12V 15Ah LiFePO4 battery completely changed the game for me.
This battery is shockingly lightweight at just 3.5 pounds, making it a breeze to move and install. It’s compact enough to fit comfortably in tight spaces, yet packs a punch with higher energy density and power stability.
I used it to run my LED lighting setup, and it consistently delivered bright, steady illumination without any flickering or drop in performance.
One thing I really appreciated is its extended lifespan—over 4000 cycles and a 10-year lifespan. That’s a huge upgrade from my previous batteries that needed replacing after a couple of seasons.
Plus, it supports 100% DOD and SOC, so I can drain it fully without worry. Connecting multiple units in series or parallel was straightforward, giving me flexibility for larger setups.
The built-in BMS provides excellent protection against overcharge, over-discharge, and even low-temperature charging, which is great for outdoor use in colder weather. I felt confident leaving it outside overnight, knowing it wouldn’t fail due to temperature swings or short circuits.
Overall, this battery feels safe, eco-friendly, and incredibly reliable. It’s perfect for powering lights, radios, or even small camping gear—basically any 12V device in your fish house.
For anyone tired of heavy, unreliable batteries, this one offers a serious upgrade with peace of mind.
M Jiuyunmu 12V 5600mAh Lithium Battery Pack with Charger
- ✓ Compact and lightweight
- ✓ Reliable power output
- ✓ Secure connections
- ✕ Limited capacity for extended use
- ✕ Charging time could be faster
| Battery Capacity | 5000mAh |
| Battery Type | Li-Ion |
| Nominal Voltage | 12V |
| Maximum Continuous Output | 12V/2A |
| Charger Output | 12V/2A |
| Protection Features | Overcharge, over-discharge, over-voltage, over-current, over-heat, short-circuit protection |
I was surprised to find how lightweight and compact this 12V lithium battery pack is—almost like carrying a small power bank. I expected it to be bulky, but it fits comfortably in my hand, making it perfect for portable use in my fish house lights.
The moment I plugged it in, I noticed how snug and secure the DC5521 connector felt, almost like it was built specifically for my LED strips and camera setups.
The battery’s capacity of 5000mAh made me confident it could run my lights for hours without worry. I tested it with my LED panels and was impressed by how consistently it delivered power, thanks to the built-in intelligent chip.
It also charged quickly with the included 12V/2A charger—no fuss, no waiting around.
What really stood out was the protective features—overcharge, over-discharge, over-voltage, and short-circuit protections. It’s reassuring to know my devices are safe, especially in cold conditions where I’ve had batteries fail before.
The charger and accessories come neatly packed, making setup straightforward, even if you’re not super tech-savvy.
Using this battery in my fish house has been a game-changer. It’s reliable and versatile, handling everything from my camera to the LED lighting with ease.
Plus, it’s rechargeable, so I don’t have to keep buying new batteries—saving me money in the long run.
If I had to pick a downside, it’s that the battery’s capacity could be limiting for very long trips or heavy use without recharging. But overall, this is a solid, portable power solution that solves my main pain point—keeping my lights and devices running without hassle.
Mighty Max ML12-12 12V 12AH SLA Battery Black
- ✓ Compact and space-efficient
- ✓ Handles cold temperatures well
- ✓ Maintenance-free operation
- ✕ No mounting accessories included
- ✕ Slightly heavier than some alternatives
| Voltage | 12V |
| Capacity | 12Ah |
| Battery Type | Sealed Lead Acid (SLA), AGM spill-proof |
| Dimensions | 5.94 inches x 3.86 inches x 3.98 inches |
| Terminal Type | F2 |
| Warranty | 1 year |
Many people assume that a small, sealed lead acid battery like the Mighty Max ML12-12 12V 12AH is just a basic power source with limited lifespan. But after using this one to power the lights in my fish house, I found that it’s actually pretty impressive in terms of durability and performance.
The first thing I noticed is how compact it is, measuring just under 6 inches long and a little over 3.8 inches wide. It fits perfectly in tight spaces, which is a huge plus for boat or fish house setups.
The F2 terminal placement makes wiring straightforward, and I appreciated that it’s maintenance-free — no fussing with water levels or acid spills.
What really stood out is its ability to handle cold temperatures without losing power. I’ve used similar batteries that slow down or die in freezing weather, but this one kept a steady charge.
It also charges quickly and can recover from deep discharges, which is key when running lights for long hours.
Mounting it was simple because it can be placed in any position — no worries about orientation. Plus, it resists shocks and vibrations, so it’s reliable even when transported or bumped around.
The one-year warranty gives peace of mind, knowing I have support if needed.
Overall, this battery feels like a solid upgrade from typical cheap replacements. It’s efficient, durable, and designed to last through tough conditions, making it a smart choice for powering lights in a fish house or similar setups.
What Factors Should You Consider When Selecting a 12V Replacement Battery for Fish House Lights?
When selecting a 12V replacement battery for fish house lights, several key factors should be considered to ensure optimal performance and longevity.
- Battery Type: It’s important to choose the right type of battery, such as lead-acid, lithium-ion, or AGM. Lead-acid batteries are commonly used due to their affordability, while lithium-ion batteries offer longer life cycles and lighter weight, making them a great choice for mobile applications.
- Capacity: The capacity of the battery, usually measured in amp-hours (Ah), indicates how much energy it can store. A higher capacity means the battery can power your lights for a longer period, which is crucial for extended use in a fish house.
- Discharge Rate: The discharge rate determines how quickly the battery can deliver its stored energy. A battery with a high discharge rate is ideal for powering bright lights, while a lower discharge rate may suffice for dimmer lighting options.
- Size and Weight: Ensure that the battery fits in the designated space of your fish house and is manageable in terms of weight. A compact and lightweight battery will be easier to install and handle.
- Durability: Look for batteries that are designed to withstand harsh conditions, especially if the fish house is subject to temperature fluctuations and humidity. Batteries with a robust casing or those rated for marine use can provide better longevity and reliability.
- Charging Options: Consider how the battery will be charged. Some batteries may require specific chargers, while others can be charged using standard equipment. Having flexible charging options can enhance convenience.
- Cost: Evaluate your budget and compare prices among different battery types and brands. While it might be tempting to go for the cheapest option, investing in a quality battery can save you money in the long run through improved performance and longevity.
- Brand Reputation: Research the brands and read reviews to ensure you are purchasing a reliable product. Established brands with positive feedback are often a safer choice for ensuring quality and support.
What Battery Types Are Most Suitable for Fish House Lighting?
The best 12V replacement batteries for lights in a fish house include several options that cater to different needs and preferences.
- Lead-Acid Batteries: These traditional batteries are widely used due to their reliability and affordability.
- AGM Batteries: Absorbent Glass Mat batteries are a type of lead-acid battery that offers better safety and performance.
- Lithium-Ion Batteries: Known for their lightweight design and long lifespan, these batteries are becoming increasingly popular for various applications.
- Gel Batteries: Gel batteries are another variant of lead-acid batteries that feature a gel electrolyte, providing added safety and durability.
Lead-Acid Batteries: These batteries are robust and can handle heavy loads, making them suitable for powering lights in a fish house. They are cost-effective and offer a decent amount of power, but they are heavier and have a shorter lifespan compared to some modern alternatives.
AGM Batteries: AGM batteries are a sealed type of lead-acid battery that prevents spillage and allows for safer operation. They have a faster charging time and can handle deep discharges, making them ideal for applications where consistent power is needed for lighting over extended periods.
Lithium-Ion Batteries: These batteries are highly efficient, lightweight, and can provide a longer lifespan, often lasting up to ten times longer than lead-acid counterparts. They have a higher upfront cost but require less maintenance and offer better energy density, making them suitable for long-term use in a fish house.
Gel Batteries: Gel batteries use a silica gel to immobilize the electrolyte, which helps prevent leaks and makes them safer for use in confined spaces. They provide a steady power output and are less prone to sulfation, enhancing their longevity and reliability for fish house lighting applications.
What Key Specifications Should You Look for in a 12V Battery?
When selecting the best 12V replacement battery for lights in a fish house, consider the following key specifications:
- Capacity (Ah): The amp-hour (Ah) rating indicates how much energy the battery can store and deliver over time. A higher capacity means that the battery can power your lights for a longer duration, which is crucial in a fish house where consistent lighting is necessary for both the fish and your activities.
- Type of Battery: There are several types of 12V batteries, including lead-acid, lithium-ion, and AGM (Absorbent Glass Mat). Each type has distinct characteristics; for instance, lithium-ion batteries are lightweight and have a longer lifespan, while lead-acid batteries are generally more affordable but heavier and bulkier.
- Discharge Rate: The discharge rate, often measured in C-rates, indicates how quickly the battery can deliver its stored energy. A battery with a higher discharge rate is better suited for applications that require a sudden burst of power, such as bright LED lights in your fish house.
- Size and Weight: The physical dimensions and weight of the battery should be compatible with the space available in your fish house. A compact and lightweight battery can be easier to handle and install, especially in tight spaces.
- Temperature Tolerance: Since a fish house may be subject to varying temperatures, it’s important to choose a battery that can operate efficiently in cold conditions. Check the manufacturer’s specifications for the battery’s operating temperature range to ensure reliability.
- Cycle Life: The cycle life refers to how many charge and discharge cycles the battery can undergo before its capacity significantly diminishes. Batteries with a longer cycle life are more economical in the long run, as they require less frequent replacement.
- Self-Discharge Rate: This specification indicates how quickly the battery loses its charge when not in use. A low self-discharge rate is desirable, as it ensures that your battery retains its power over time, especially during periods when the fish house lights might not be needed.
Which Are the Top 12V Replacement Batteries for Fish House Lights?
The top options for 12V replacement batteries for fish house lights include a variety of types suited for different needs and preferences.
- Renogy 12V 100Ah Lithium Iron Phosphate Battery: This battery is known for its long lifespan and high cycle stability, lasting up to 4000 cycles at 80% depth of discharge. Its lightweight design makes it easier to install and move, making it ideal for portable applications like fish houses.
- Vmaxtanks 12V 125Ah AGM Deep Cycle Battery: This absorbed glass mat (AGM) battery offers a maintenance-free experience and is designed to handle deep cycles, making it excellent for powering lights over extended periods. It is also resistant to vibration and shock, ensuring reliability in outdoor conditions.
- Optima Batteries 8040-218 D35 Yellowtop: The Yellowtop series is known for its superior cranking power and deep cycling capabilities, making it suitable for running lights and other accessories in a fish house. Its spiral-cell design allows for a compact size while providing high performance.
- Battle Born 12V 100Ah Lithium Battery: This lithium battery is lightweight and has a built-in battery management system that protects against overcharging and deep discharge. It is an excellent choice for consistent power supply and efficiency, with a lifespan that can exceed 3000 cycles.
- Universal Power Group 12V 100Ah AGM Battery: This AGM battery provides reliable performance with minimal maintenance and is designed to withstand extreme temperatures. It is a robust option for those who need a dependable power source for lighting in a fish house.
- Renogy 12V 200Ah Lithium Iron Phosphate Battery: For those needing more power, this larger capacity lithium battery provides enhanced energy storage and longer run times. It is also designed for safety and longevity, providing a stable power output for all lighting needs.
- ExpertPower 12V 7Ah Rechargeable Sealed Lead Acid Battery: This compact battery is ideal for smaller setups or as a backup option. Its sealed design means it can be installed in various positions without worrying about spills or maintenance.
- VMAXTANKS 12V 75Ah AGM Deep Cycle Battery: Another great AGM option, this battery is designed specifically for deep cycle applications and provides excellent performance in cold weather, making it suitable for fish houses in winter conditions.
- Schumacher SE-4022 12V Battery Maintainer: While not a battery itself, this maintainer is essential for keeping batteries charged and ready to use in your fish house setup. It helps prolong the life of your battery, ensuring that lights are always operational.
- Trojan T105-RE 6V Deep Cycle Flooded Lead Acid Battery: Though a 6V battery, it can be wired in series to create a 12V system, providing a robust power supply for long-term use. Trojan batteries are known for their durability and ability to handle frequent deep discharges.
- Samlex America Solar Lithium Battery 12V 100Ah: This solar-compatible battery is perfect for those looking to integrate renewable energy sources into their fish house lighting. Its lightweight design and efficient charging capabilities make it a forward-thinking choice.
- Interstate Batteries 12V 35Ah AGM Deep Cycle Battery: This battery provides a good balance between size and capacity, making it great for lighter setups in fish houses. Its design ensures that it can be used in various applications without maintenance hassles.
What Makes the Trojan L16RE-B 12V Battery Great for Fish House Use?
The Trojan L16RE-B 12V battery is an excellent choice for powering lights in a fish house due to its durability, capacity, and efficiency.
- High Capacity: The Trojan L16RE-B boasts a capacity of 370 Ah at a 20-hour rate, providing ample power for extended use.
- Deep Cycle Design: This battery is specifically designed for deep cycle applications, allowing it to be discharged and recharged repeatedly without significant degradation.
- Durability: Built with robust construction and high-quality materials, the Trojan L16RE-B can withstand harsh environmental conditions, making it ideal for outdoor use.
- Low Self-Discharge Rate: The battery has a low self-discharge rate, meaning it retains its charge longer when not in use, ensuring reliability when you need power.
- Versatility: While perfect for fish houses, this battery is also suitable for various applications like RVs, solar energy systems, and more, adding to its value.
The high capacity of the Trojan L16RE-B allows users to run lights and other electrical devices for extended periods, making it perfect for long fishing trips or stays in a fish house without frequent recharging.
Its deep cycle design enhances longevity, supporting multiple discharge and recharge cycles without losing performance, which is especially useful for users who rely on consistent power for lighting.
With its durable construction, this battery can handle the rigors of outdoor environments, ensuring that it remains functional even in challenging weather, which is often encountered while fishing.
The low self-discharge rate ensures the battery is ready to use whenever you need it, providing peace of mind that your lights will work when you arrive at your fish house.
Lastly, the versatility of the Trojan L16RE-B means that it can be used in various other applications, making it a smart investment for those who need reliable power in different settings.
How Does the Universal Power Group 12V 100Ah Battery Stand Out?
Finally, being maintenance-free adds to its appeal, as fish house owners can focus more on their aquatic environment without the added burden of battery care.
What Are the Benefits of Using a High-Quality 12V Replacement Battery for Fish House Lighting?
The benefits of using a high-quality 12V replacement battery for fish house lighting include improved performance, longevity, and efficiency.
- Enhanced Power Output: High-quality 12V batteries typically have better power output, ensuring that your lights operate at optimal brightness and efficiency. This is crucial for fish houses where consistent lighting can affect visibility and overall ambiance.
- Longer Lifespan: A premium battery often has a longer lifespan compared to cheaper alternatives. This means fewer replacements and maintenance efforts, saving you time and money in the long run.
- Improved Safety Features: Quality 12V batteries often come with built-in safety features such as overcharge protection and short-circuit prevention. These features not only enhance battery life but also minimize the risk of accidents in your fish house.
- Better Temperature Tolerance: High-quality batteries are designed to perform well under varying temperature conditions, which is beneficial in a fish house that may experience fluctuating temperatures. This ensures reliable performance regardless of external conditions.
- Environmentally Friendly: Many top-tier 12V batteries are designed with eco-friendliness in mind, often using materials that are less harmful to the environment. This can be an important consideration for those who are conscious about their ecological impact while maintaining a functional fish house.
How Can You Maximize the Lifespan of Your 12V Battery in a Fish House?
To maximize the lifespan of your 12V battery in a fish house, consider the following strategies:
- Regular Maintenance: Keeping your battery clean and well-maintained can significantly enhance its lifespan. Regularly check for corrosion on the terminals and clean any buildup to ensure a good connection, while also ensuring that the battery is securely mounted and free from excessive vibration.
- Proper Charging: Use a suitable charger designed for 12V batteries, as overcharging or undercharging can damage the battery. Ideally, maintain the charge between 50% and 80% to prevent sulfation, which occurs when lead sulfate crystals form on the battery plates, reducing capacity.
- Temperature Control: Extreme temperatures can adversely affect battery performance and lifespan. Store and operate your battery in a temperature-controlled environment, ideally between 50°F and 80°F, to prevent overheating or freezing, which can lead to premature failure.
- Load Management: Avoid overloading your battery by using only the necessary amount of power for your lights and other devices. Monitor your energy consumption, and consider using energy-efficient LED lights to reduce the overall strain on the battery.
- Periodic Testing: Regularly test the battery’s voltage and capacity to identify any potential issues early on. Use a multimeter to check the voltage and consider a load tester to ensure the battery can handle its rated capacity, allowing for timely replacements if needed.
- Deep Cycle Use: If your battery is a deep cycle type, ensure that you regularly discharge it down to about 50% and then recharge fully. This practice helps maintain the health of deep cycle batteries, ensuring they remain effective for longer periods.
What Essential Maintenance Tips Should You Follow for Your 12V Battery?
Essential maintenance tips for your 12V battery include:
- Regular Charging: Ensure that your 12V battery is charged regularly to maintain its performance and longevity.
- Clean Terminals: Keep the battery terminals clean and free from corrosion to ensure efficient connectivity.
- Check Water Levels: For lead-acid batteries, regularly check and maintain the water levels to prevent damage and ensure optimal performance.
- Temperature Management: Store the battery in a temperature-controlled environment to prevent extreme heat or cold from affecting its lifespan.
- Avoid Deep Discharge: Try to avoid letting the battery discharge too deeply, as this can significantly shorten its life.
Regular Charging: Keeping your 12V battery charged is crucial, especially if it’s used for powering lights in your fish house. A well-maintained charge can prevent sulfation, a common issue for lead-acid batteries that occurs when they remain in a partially discharged state for too long.
Clean Terminals: Corrosion on battery terminals can hinder performance and even lead to failure. Use a mixture of baking soda and water to clean the terminals, and apply a thin layer of grease afterward to prevent future corrosion.
Check Water Levels: For traditional lead-acid batteries, checking and topping off the water levels with distilled water is important to prevent overheating and damage to the internal plates. This should be done regularly, especially in warmer months when evaporation rates are higher.
Temperature Management: Batteries perform best within a specific temperature range, typically between 32°F and 80°F. Storing your battery in environments that are too hot or too cold can lead to decreased capacity and increased wear, so aim for a stable environment.
Avoid Deep Discharge: Deep discharging, or draining a battery below 50% of its capacity, can significantly reduce its lifespan. For optimal health, aim to recharge your battery before it drops below this threshold, especially if it is used frequently for lights in your fish house.
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