【🇺🇸20 Days Pre Sale】12V 640Ah Bluetooth LiFePO4 Battery with 250A BMS

1. Long-lasting, lower replacement cost: 6000 cycles @80%DOD, far exceeding lead-acid batteries and reducing long-term usage costs.

2. Bluetooth smart control, battery status known anytime: APP monitors SOC, voltage, temperature and other key data in real time.

3. 250A BMS + 6 layers of protection to guard against electrical risks: 300A Peak Discharge Current, effectively reducing thermal runaway hazards and ensuring safe high-power discharge.

4. 640Ah huge capacity, 8192Wh ultra-long endurance: Energy density over twice that of same-size lead-acid batteries, easily powering RV air conditioners, boat motors and other high-power devices.

5. Multi-scenario adaptability, covering all high-power needs: Suitable for RVs, off-grid storage, boats, horticultural equipment and 90% of energy storage scenarios, better matching high-power long-term supply demands.

6. 3 charging methods + 1C fast charge for more flexible recharging: Supports charger, solar panel, generator charging; fully charges in 12.8 hours at 1C rate.

7. Easy-install design, compatible with existing systems: Weight 111.88 lbs, M8 terminals compatible with existing lead-acid battery systems, square design saves installation space and can be handled by one person.

8. 4S4P: Expandable to 131 kWh family-scale large-capacity storage to meet long-term off-grid or backup power needs for households.

9. Wide temperature adaptability, stable operation from -4°F to 149°F: Can discharge normally in low temperatures and won’t fail in high temperatures, suitable for various regional climates.

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 .

• Processing time: 1-2 business days
• Shipping time: 2-5 business days

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. 

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:

• Email: service@humsienk.com
• Phone: (+86)755 3452 3348

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.