🔥 Why Choose Humsienk 12V 300Ah LiFePO4 Battery with Bluetooth?
Click "Description" below for full details!
At Humsienk, we are committed to providing our customers with a smooth, efficient, and safe shipping experience.
Shipping Methods and Time
We offer two shipping methods to meet your needs, whether you're ordering a single battery or bulk quantities. All shipping is processed through reliable carriers, including UPS Ground & FedEx .
The shipping will delay for some objective or uncontrolled reasons. We will notice our customer ahead for delays.
Please read our shipping policy page for more details.
If buyers need to cancel the delivered order, the buyer still covers shipping for non-defect returns. Shipping costs incurred will be deducted from the order amount.
Contact Us
If you have any questions or concerns about shipping, delivery, or the handling of your order, please don’t hesitate to reach out to our customer support team:
30-Day Return Policy
We want you to be completely satisfied with your Humsienk purchase. That's why we offer a hassle-free 30-day return policy.
Refunds:
Once we receive your approved return, we'll inspect the item and issue a full refund within 3 business days to your original payment method. Processing times by your bank or credit card company may apply.
Order Cancellation:
We typically process orders within 1-2 business days. To cancel an order, contact us as soon as possible at service@humsienk.com.
If the order has already shipped, we'll process a refund within 3 business days of receiving the returned product.
Contact Us:
For questions about our return policy or to initiate a return, please contact us at service@humsienk.com.
Tips: Please read our Return and Refund policy page for more details.
Energy
Expandable Energy
Lifespan
Lighter
In the pursuit of unlimited energy, Humsienk was born from a simple yet powerful vision: to create more efficient, lighter, and longer-lasting power solutions. Traditional lead-acid batteries are heavy, short-lived, and slow to charge—limitations that no longer fit the demands of modern off-grid living, RV travel, marine use, and energy storage. We set out to break these boundaries with cutting-edge lithium technology that delivers unmatched durability and performance.
EV Grade A+ prismatic cells only, 5000-15000 DOD, 10+ years battery life.
overcharge/over-discharge/overcurrent/short-circuit/overheating protection.
Low-Temperature Cut-Off: auto cut off discharging ＜ -4℉, cut off charging ＜ 0°C / 32°F and resume charging ＞ 5°C / 41°F
Humsienk 12V 300Ah LiFePO4 battery provides 100% of its rated capacity, meaning you get the full 300Ah without voltage drops, unlike lead-acid batteries, which only allow 50% usable capacity.
✅ 10x longer lifespan – 15,000+ cycles vs. 300-500 cycles
✅ 70% lighter – 67.5 lbs vs. ~200 lbs (lead-acid equivalent)
✅ Faster charging – Charges up to 5x faster
✅ No maintenance required – No acid spills, no corrosion
✅ Higher efficiency – Consistent voltage output for stable power
🔹 Continuous discharge: 200A
🔹 Peak discharge: 300A (for 5-10 seconds)
🔹 Max charge current: 100A
🔹 Charging voltage: 14.2V - 14.6V
Yes! With a 200A continuous output, it supports:
✔️ RV power systems
✔️ Trolling motors (up to 100lbs thrust)
✔️ Off-grid solar energy storage
✔️ Backup power for home and business
📱 Real-time data tracking via a smartphone app, displaying:
✅ State of Charge (SOC%)
✅ Voltage, current, and power consumption
✅ Battery temperature and health status
✅ Protection & alarm notifications
Compatible with Android 4.3+ / iOS (Bluetooth 4.0+).
Absolutely! The built-in 200A Smart BMS provides:
✅ Overcharge & over-discharge protection
✅ Overcurrent & short circuit protection
✅ Low & high-temperature cutoff
✅ IP65 waterproof rating – Safe from dust, water splashes, and vibrations
✅ Operating temperature: -4°F to 158°F (-20°C to 70°C)
✅ Charging protection: Stops charging below 32°F (0°C) to prevent damage
✅ Works in hot climates: Automatically prevents overheating
Yes! You can connect up to:
🔹 4 batteries in series for a 48V system
🔹 4 batteries in parallel for 1200Ah capacity
Note: Always use identical batteries for best performance.
🚚 Fast delivery:2-5 business days from warehouses in CA, GA, TX
🔒 Warranty:5-year limited warranty + lifetime technical support
