12V 8Ah Battery
Whether you need to replace a failed UPS (uninterruptible power supply) battery, ensure the continuous operation of a security system, or find a stable power source for an exciting DIY electronic project, choosing the right battery is a critical first step. Hongyitai is a professional lithium battery production factory in China, and our 12.8V 8Ah LiFePo4 battery is often used to replace traditional lead-acid batteries.
12V 8Ah Rechargeable Battery Benefits
Ultra-long cycle life, 12.8V 8Ah LiFePO4 battery can withstand 2000 or even up to 5000 deep charge and discharge cycles.
At the same capacity, LiFePO4 batteries are usually only 1/2 to 1/3 the weight of SLA batteries of the same specifications.
LiFePO4 batteries can be safely discharged to 80% or even 100% of their rated capacity without compromising their lifespan.
LiFePO4 batteries can maintain a relatively stable voltage platform of 12.8V during the entire discharge process.
LiFePO4 batteries can withstand higher discharge currents, 3C rates.
LiFePO4 is the most chemically stable type in the lithium-ion battery family. Its lithium iron phosphate cathode material has good thermal stability and is not prone to thermal runaway.
LiFePO4 batteries do not contain heavy metals such as lead and cadmium, and are more environmentally friendly.
1280 12V 8Ah battery specification
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Work Voltage Range 10.8~14.6V
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Nominal Voltage 12.8V
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Nominal Capcity 8Ah
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Rated Energy 102.4Wh
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Max Discharge Power 128W
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Standard Charge Current 2A
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Max Charge Current ≤4A
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Max Charge Current 10A
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Recommend Discharge Current ≤8A
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Max Continue Discharge Current 10A
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Peak Discharge Current (10S) 20A
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Resistance ≤40mΩ
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Lifespan (25℃, 0.5C, 80% DOD) > 6000
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Waterproof IP65
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Weight 1Kg
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Size (Length, Width, Thick) 151 * 65 * 94mm
| Feature | SLA (AGM/Gel) | LiFePO4 |
|---|---|---|
| Weight | Heavy | Light |
| Cycle Life | Lower (~200-500) | Much Higher (2000+) |
| Energy Density | Lower | Higher |
| Upfront Cost | Lower | Higher |
| Voltage Stability | Drops gradually | More Stable |
| Maintenance | None | None |
| Self-Discharge | Moderate | Low |
| Best For… | Standby (UPS, Alarm), Budget-Conscious | High Cycle Use, Weight Sensitive Apps, Long-Term Value |
Hongyitai Batery Factory
12V 8Ah Common Battery Type Comparison
When choosing a 12V 8Ah battery, there is no absolute “best” option, but it should be weighed based on specific application scenarios, performance priorities (such as weight, life, cost), budget constraints, and considerations of long-term value. SLA is suitable for specific scenarios due to its low cost and maturity, while LiFePO4 has become the first choice for more and more demanding applications due to its significant advantages in performance, life and efficiency. Although the initial investment is higher, its total cost of ownership in the long run may be lower. The table on the left is designed to help you clearly identify the match between your needs and the characteristics of different battery technologies, so that you can make the most suitable choice.
Typical Applications for 12V 8Ah Lithium Batteries
12V 8Ah is a very common battery specification. With its moderate capacity and voltage, it is widely used in various occasions that require backup power, portable power supply or small power support. It is commonly used in motorcycle, uninterruptible power supply (UPS), security system, emergency lighting, medical equipments, children’s electric riding toys, fish finders and portable electronic devices, small solar energy storage systems.
How to Choose the Right 12V 8Ah Battery
Step 1: Confirm the physical size and terminal type
Carefully measure the size of the old battery in your device to ensure that the new battery size you purchase is within the tolerance range allowed by your device. Observe the terminal style of the old battery (narrow F1, wide F2, bolt hole, etc.) and pay attention to the orientation of the positive and negative poles.
Step 2: Select the battery chemistry (SLA or LiFePO4)
If you are simply replacing an old battery and are happy with the original performance, the easiest and usually safest approach is to choose the same chemistry as the original battery (i.e. if the original was SLA, buy a new SLA).
If your application is a cyclical use scenario with frequent charging and discharging, upgrading to LiFePO4 is often more valuable in the long run and provides a better user experience.
Step 3: Evaluate your specific application needs (standby vs. cycling)
For standby, the battery is in a fully charged standby state most of the time, with few discharge times and low requirements for cycle life.
Cycle. Batteries need to undergo frequent deep or shallow charge and discharge cycles, and LiFePO4 batteries have more advantages.
Step 4: Focus on brand reputation and product quality
Priority is given to brands with good reputation, high market recognition and technical accumulation in the battery field. For example, Hongyitai has been focusing on the production of lithium iron phosphate batteries for more than 10 years.
12V 8Ah Li-ion battery installation, charging & maintenance tips
Correctly installing, charging and maintaining your 12V 8Ah battery will not only ensure the normal operation of your equipment, but also significantly extend the battery life and ensure safe use. Here is a practical guide:
Install
Verify polarity and connect correctly: This is an absolutely critical step. Make sure to connect the positive (+) end of the battery to the positive terminal of the device and the negative (-) end to the negative terminal of the device.
Clean and tighten the terminals: Make sure the battery terminals and device connection wires are clean and free of rust. After connection, use appropriate tools to tighten/clamp the terminal screws or clamps to ensure good contact and no looseness.
Charge
Please make sure to use a dedicated charger that matches your battery chemistry. It is generally recommended that the charging current does not exceed 20%-30% of the battery capacity. For an 8Ah battery, the charging current is preferably between 1.6A and 2.4A.
Avoid overcharging and over-discharging. They will seriously shorten the lifespan and even cause safety hazards.
Maintenance and storage
Keep clean: Check the appearance of the battery regularly, keep the case and terminals clean and dry to prevent dust accumulation and corrosion.
When storing for a long time, it is recommended to keep the LiFePo4 battery at 40% – 60% SOC (State of Charge), in which the battery ages the slowest. It does not need to be fully charged for storage.
Customize your own 12V 8Ah LiFePO4 battery
For the customization of 12V 8Ah LiFePO4 battery, you can communicate with us the following key elements:
Physical Dimensions & Case: Customize your battery pack to the exact length, width, and height based on the space you have available.
Terminals & Connectors: Specify the desired terminal type (e.g., F1, F2, M5/M6 bolt hole, Anderson, XT60/90, etc.)
Battery Management System (BMS) parameter adjustment: continuous discharge current, peak discharge current, specific protection thresholds, communication functions (UART, RS485, CANbus).
Additional functions: Select a specific brand or grade of battery, Bluetooth function, heating function, waterproof level.
FAQs for 12V 8Ah lithium ion battery
- Determine battery type: Identify the battery's chemistry (LiFePO4, AGM, Gel, Lead Acid). Make sure the charger is compatible with that specific type.
- Check voltage rating: Make sure the charger's output voltage is 14.6 volts, matching the battery.
- Choose the right current: For an 8Ah battery, the ideal charger should be rated between 1.6A and 4A to charge safely and prevent overheating.
- Comes with safety features: Choose a charger with features like auto shutoff, overcharge protection, and maintenance mode to extend battery life.
The usage time of a 12V 8Ah battery depends on factors: load (power consumption of the device), depth of discharge and environmental conditions.
Usage time (hours) = battery capacity (Ah) / load current (A)
If, the load is 2A, usage time: 8Ah / 2A = 4H
- Select a 14.6V charger.
- Connect the charger: Connect the red clip of the charger to the positive ("+") terminal of the battery and the black clip to the negative ("-") terminal.
- Set the charging current: It is recommended to select a charging current of 0.8A to 1.6A.
- Plug the charger into a suitable power outlet to start charging.
- Check the status of the charger and battery regularly until charging is complete.
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