HQST 12V 300Ah LiFePO4 Battery - Mini Size & True 3840Wh
- • True 3840Wh Capacity : Delivering the exact power you paid for—no false 3200Wh claims.
- • Compact Mini Size : Measuring 15.04 × 9.84 × 7.60 in — 32% smaller than a standard 12V 300Ah LFP battery. Only 57.3 lbs, up to 70% lighter than three 12V 100Ah lead-acid batteries.
- • Extended Runtime : Powers a 120W device for 32 hours (vs. 26 hours from competitors).
- • Unmatched Value : True power costs only $0.09/Wh compared to the $0.11/Wh market average.
- • EV grade LiFePO4 cells : 100% brand new cells. No recycled parts. 10-Year Warranty.
- • Optimized 200A BMS : Features an aluminum cooling plate to prevent overheating.
- • Ultra-Secure Wiring : Thick 3-6AWG internal cables ensure safe, stable high-current output without melting.
- • Off-Grid Ready : Perfect for RV weekends, trolling motors, and home backup.
HQST 12V 300Ah LiFePO4 Battery - Mini Size & True 3840Wh - 1 Pack is backordered and will ship as soon as it is back in stock.
HQST 12V 300Ah Lithium Iron Phosphate (LiFePO4) Battery
Technical Specifications
Controller Setting (for reference)
Weight & Dimensions
Warranty
Frequently Asked Questions
Can it be used in cold weather?
Can it be used in cold weather?
This HQST 12.8V 300Ah LiFePO4 battery is equipped with low-temperature cut-off protection.
Charging cut-off range: 23℉to 41℉(-5℃to 5℃)
Discharging cut-off range: -13℉to 5℉(-25℃to -15℃)
The battery will automatically resume operation once the temperature rises above the cut-off point, helping to prevent damage in extreme cold conditions.
Can I use my sealed lead-acid battery charger to charge this LiFePO4 battery?
Can I use my sealed lead-acid battery charger to charge this LiFePO4 battery?
No, you can’t. Using a sealed lead-acid (SLA) charger may cause irreversible damage to the battery. You must use a compatible LiFePO4 (lithium iron phosphate) AC-to-DC charger.
If you’re using a solar off-grid system, you can charge the battery with solar panels and a charge controller that supports LiFePO4 batteries. Make sure to set the controller to the LiFePO4 battery type and configure the correct charging voltage.
Does this battery have low voltage cut-off protection?
Does this battery have low voltage cut-off protection?
Yes, it does. The battery will automatically shut off when the discharge voltage drops below 9.2V to protect against over-discharge. It will recover once the voltage rises above 11V.If the battery enters low voltage protection mode, follow these steps to restore it:
1. Disconnect all wiring.
2. Use a LiFePO4-compatible charger or solar charge controller with an activation function.
3. Make sure the ambient temperature is above 41℉(5℃) and charge the battery until the voltage exceeds 11V.
Will the battery come with terminals? And if not, what size are the connector terminals?
Will the battery come with terminals? And if not, what size are the connector terminals?
Yes, the battery comes with four M8 bolts.
Can I charge the battery directly using a solar panel?
Can I charge the battery directly using a solar panel?
No, you can’t. When charging this battery with a solar panel, you must use a solar charge controller (either PWM or MPPT) between the panel and the battery. Directly connecting the panel to the battery can lead to unstable power output, which may damage the battery or connected devices.
Can this battery be used as a starter battery?
Can this battery be used as a starter battery?
No, it can’t. This battery is designed for low to moderate continuous power applications that require stable energy storage and delivery, such as RVs, off-grid solar systems, and home energy storage.It is not suitable for applications that require high starting currents or power surges, such as engine cranking for cars or boats, or use in golf carts.






















