Estimated to Ship by August 14.

Pre-Order: HQST 12V 330Ah Mini LiFePO4 Battery | 4224Wh, 200A BMS

SKU: HBT12330LFP-S48-G1-US
$449.99 $599.99

Key Features
  • • Upgraded 330Ah Capacity: Upgraded from 300Ah to 330Ah, delivering 10% more capacity and 384Wh more rated energy.
  • • 4,224Wh Rated Energy: Stores 4,224Wh of energy in a single battery for extended RV, marine, off-grid solar and backup power use.
  • • Compact Single-Battery Design: Delivers 330Ah capacity in a 15.08 × 7.64 × 10.24 in housing, helping simplify high-capacity battery installations.
  • • Automotive-Grade LiFePO4 Cells: Built with brand-new automotive-grade cells for stable output, reliable capacity and up to 8,000 cycles at 70% depth of discharge.
  • • Powerful 200A BMS: Supports up to 200A continuous discharge for high-demand appliances and protects against overcharging, over-discharging, overcurrent, short circuits and excessive temperatures.
  • • Reinforced Internal Structure: Secure cell fixation, heavy-duty internal connections, and aluminum BMS cooling components support long-term stability under heavy loads.
  • • Expandable Energy Storage: Supports series and parallel connections for RV, cabin, marine and home backup systems, with configurations up to 4S4P.
  • • Built for Off-Grid Applications: Suitable for RVs, trolling motors, boats, cabins, solar storage and emergency home backup.
Option
Quantity:
Pre-Order: 12V 330Ah LiFePO4 Battery - Estimated to Ship by August 14.
Payment Methods
Delivery Methods
Estimated delivery time: 2–5 business daysShipping Policy.
Return & refund policy

Shipping, Returns & Refunds Policy

Shipping

  • Free standard ground shipping on orders $49.99+ (before tax).
  • Orders below $99.99 are charged a $10 flat shipping fee.
  • Free shipping applies within the contiguous United States only.
  • Oversized, heavy, or restricted items may be excluded (noted on product page).
  • Orders are processed within 1–3 business days (excluding weekends and holidays).
  • Estimated delivery time is 2–7 business days after shipment.
  • Orders may ship in multiple packages, each with its own tracking number.
  • A valid street address is required; some items cannot be delivered to PO Boxes.
  • Shipments cannot be rerouted once shipped.
  • Shipping to Alaska and Hawaii is available with surcharges.
  • International shipping availability varies by location; customers are responsible for customs clearance and duties.

Order Cancellation

  • Orders can be canceled within 4 hours of placement, before shipping begins.
  • Once shipped, cancellation or interception cannot be guaranteed.

Returns

  • Return requests must be submitted within 30 days of delivery.
  • Items must be unused, undamaged, unmodified, and returned in original packaging.
  • A Return Merchandise Authorization (RMA) is required before returning any item.
  • Modified products are not eligible for return.

Return Shipping Costs

  • HQST covers return shipping only if the product was damaged during shipping, defective, or an incorrect item was delivered.
  • For all other reasons, return shipping costs are the customer’s responsibility.

Refunds

  • Refunds are issued within 7–10 business days after inspection.
  • Refunds are processed to the original payment method.
  • Damage caused by improper installation or handling is not eligible for refund.

Replacements

  • Shipping or manufacturing damage must be reported within 30 days, with supporting photos.
  • Replacement items ship via standard shipping only and cannot be expedited.
  • Replacements can only be shipped to the original country of purchase.

Third-Party Purchases

  • Orders placed through third-party sellers are subject to the seller’s return policy.
  • HQST provides warranty replacements only for eligible third-party purchases.

Contact

For shipping, returns, refunds, or replacements, contact:
sales@myhqsolar.com

30-Day Returns & Refunds

Return & Refund Policy

Refund policy

  •  Thank you for shopping with HQST.
  •  Our goal is 100 percent customer satisfaction. But in the event something isn’t quite right, we've made the return process super easy.

Order Cancellation

Customers can cancel transactions any time before HQST begins the shipping process. The shipping process typically begins within 4 hours of placement of the order, so you can cancel the order yourself within 4 hours of placing it. If unable to cancel an order before shipping, please refuse the package if you know the tracking information, you can also contact the HQST Customer Service team for help (please note we cannot guarantee that an order can be successfully cancelled or a package intercepted if it has already been shipped).

Customers can make returns in accordance with HQST’s Return Policy.

HQST 30-Day Return Policy

For returns of products purchased online at hqsolarpower.com customers need to contact HQST customer service within 30 days of receiving the item to initiate the return process. To be eligible for return, items must be in the original packaging unused, undamaged, unmodified, and have a return authorization number provided by HQST. Proof of purchase must be provided by the customer to begin the return process.

Original packing: it should be the original container or covering which is used to package the product, including all accessories, attachments as well as manual, etc.

Return authorization number: customer needs to first contact HQST customer support team for getting the RMA number before returning the order.

Note: Upon receiving your package, we kindly advise keeping the original packaging handy for any potential future needs.

Shipping Costs of Return

Shipping costs for product returns will be paid by HQST under the following conditions:

  •  Product was damaged during shipping or warehouse handling
  •  Product defects
  •  Incorrect product was delivered

The customer is responsible for any return shipping costs when product is returned under any other conditions. Costs vary by shipping location.

HQST does NOT accept returns of items that have been modified in any way. Any modifications will render the HQST warranty null and void. Any modified products returned to HQST will be shipped back to the customer at the customer’s expense.

For approved returns, HQST will provide a prepaid return shipping label.

For returns due to customers' subjective reasons (such as no longer needing to change plans, etc.), within the allowed return window, the shipping cost for returns should NOT be borne by HQST.

Unauthorized returns may result in processing delays, additional fees, or other complications.

To ensure a smooth return process and protect your interests, please request a Return Merchandise Authorization (RMA) before returning any item.

Refunds

For returns related to customer preference (not related to defects, shipping damage, or incorrect items), the return shipping cost will not be covered by HQST. After receiving the returned item, HQST will issue a refund within 7 ~ 10 business days. HQST will notify the customer by email once the refund has been processed. The refund will be processed through your original payment method. It may take some time before your refund is posted on your bank account or credit card statement. If you haven't received a refund within this period, please first check your credit card transaction or bank account again. If the refund isn’t received after 7-10 business days, please contact the HQST Customer Support Team. All returned items will be inspected to ensure they meet HQST’s return policy.

If damage results due to improper handling during the setup or installation, whether it is done professionally or by the customer, the product is no longer eligible for replacement or refund.

If your payment card uses a currency other than USD, the refunded amount may differ from your original order amount due to exchange rate fluctuations. This difference is determined solely by your card issuer and is beyond HQST's control.

To fully resolve this issue, we need your cooperation with the troubleshooting steps. If we are unable to proceed, our refund will be limited to 50% of this product.

Product Return Process

To request authorization for return, contact HQST customer service. Once customers have contacted HQST they will be asked to provide the reason for the return, and a receipt or proof of purchase.

The HQST Customer Service Team will determine whether the purchase is eligible for return. After confirming the order is eligible, HQST will issue a Return Material Authorization (RMA) number and a prepaid return shipping label. The customer must clearly mark the RMA number on the package and include the dated proof of purchase with the product.

For returns made within the 30-day right of withdraw period and returns requested after 30 days of receipt that are unrelated to product defects (such as no longer needing to change plans, etc.), within 14 days after getting RMA, customers should ship out the product to HQST.

For products being returned due to quality issues, which are beyond 30 days’ return period but within warranty period, HQST will provide instructions on how to properly package the product to return it safely. Do not ship the product before receiving the proper shipping safety instructions.

Note: Do not return any items without the RMA confirmation from the HQST Customer Support Team. For returns without RMA confirmation, the refund or replacement will not be processed, and the items will be returned to the sender.

The warehouse does not accept personal drop-offs. Unauthorized returns without prior approval may lead to processing delays, additional charges, or other complications. To protect your rights, please follow the standard return procedure.

Replacement

Damage issue: Within 30 days of placing an order, please provide photos of the damaged product, the packaging, and the shipping label. Once the issue is confirmed by HQST Customer Service, HQST will prioritize a replacement. For assistance, please contact our customer service team or email us at sales@myhqsolar.com. If damage results due to improper handling during the setup or installation, whether it is done professionally or by the customer, the product is no longer eligible for replacement.

Quality Issue: If you encounter a product defect within the warranty period, please email the following information to our support team at sales@myhqsolar.com:

  •  Multimeter readings (if applicable)
  •  Your invoice, or the following details: Order number, Proof of purchase
  •  Clear photos of: the damaged or defective product, the product’s outer packaging

 (including overall condition and any damage), the shipping label (showing sender/recipient details and tracking number)

  •  Mailing address
  •  Contact telephone number

Once reviewed and confirmed by the HQST customer service team, HQST will prioritize your replacement request.

Please note that replacement products can only be sent to the original order's country of purchase, as cross-border reshipping is not currently available.

This policy applies only to HQST products purchased through hqsolarpower.com.

FOR THIRD-PARTY PURCHASE

Thank you for purchasing HQST product from one of our approved third-party vendors. Returns and refunds for purchases made through these third-parties (Walmart, Home Depot, Best Buy, Amazon LLC, etc.) must be handled through the vendor's return policy. HQST cannot assist in third-party returns and refunds. HQST can only offer replacements for products still within the warranty period.

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Show More Benefits Show Less
Description
Specs
FAQ
Reviews
Capacity Upgrade
Longer Runtime
EV-Grade Cells
200A BMS
Low-Temp Protection

More Energy. Same Footprint.

Upgraded from 300Ah to 330Ah for 10% more capacity and 4,224Wh of rated energy.

More Energy. Longer Runtime.

Get 4,224Wh of dependable power for longer RV trips and fewer recharges.

Automotive-Grade Cells

Brand-new LiFePO4 cells deliver stable output, reliable capacity, and long cycle life.

200A Power. Built for Safety.

A 200A BMS supports heavy loads with built-in protection and improved heat dissipation.

Protected in Freezing Weather

Low-temperature cut-off automatically protects the battery during charging and discharging.

Mini Size
Simpler Setup
Compact Power
RV Sizing Guide
Lithium Advantage

330Ah in a Mini Size


Get high-capacity power in a compact 15.08 × 7.64 × 10.24-inch design.

One Battery. Fewer Connections.

Replace multiple smaller batteries with one 330Ah battery for simpler wiring and installation.

More Power, Less Space

Delivers over three times the energy of a 100Ah battery without taking up three times the space.

Choose the Right Battery Bank

Match the number of 330Ah batteries to your RV size, power needs, and system load.

Upgrade from Lead-Acid

Get more usable energy, longer cycle life, and less weight than traditional lead-acid batteries.

RV Expansion
Home Backup

Expandable Power for Your RV

Connect batteries in series or parallel to build the voltage and capacity your system requires.

Scalable Home Backup Power

Expand up to a 4S4P system with 67.584kWh of rated energy for extended backup.

Weekend Power
Fishing Power
Emergency Backup

Power Your Entire Weekend

Two 330Ah batteries provide 8.448kWh for refrigeration, cooking, lighting, and connected devices.

Power a Full Day on the Water

Run your trolling motor, fish finder, mini fridge, and lights from one 4.224kWh battery.

Backup Power When It Matters

Keep essential appliances and devices running during outages and extreme weather.

Affordable, High-Efficiency Solar Power
RV Power System
Storm Backup

HQST: Your Complete Off-Grid Power Solution

Built with advanced technologies including bifacial design, N-Type cells, and Grade A+ materials, our panels deliver superior energy conversion for higher output and greater off-grid independence.

Smart Solar Charging for Maximum Efficiency

Achieve up to 99% MPPT tracking and 98.7% peak conversion efficiency. Built-in Bluetooth monitoring and low-temperature protection ensure safe, optimized charging for your LiFePO4 battery system.

Turn Stored Energy Into Home-Ready Power

HQST pure sine wave inverters deliver clean, grid-like AC power to run sensitive electronics smoothly and reliably — so you're ready for any outage.

Specifications

Model
HBT12330LFP-S48
Nominal Voltage
12.8V
Energy
330Ah / 4224Wh
Rated Capacity (0.2C)
330Ah / 4224Wh +-1%
Cycle Life (0.2C, 25±5℃)
8000(70% DOD)
Maximum Continuous Discharge Current
200A
Maximum Charge Current
60A optimal / 100A Max
Max. Charging Voltage
14.6V
Discharge Cut-off Voltage
11.1V
Self Discharge Rate
3%
Over-Discharge Recovery Voltage
12.6V
Charging Temperature Range
32℉~113℉ / 0℃~45℃
Discharging Temperature Range
14℉~113℉ / -10℃~45℃
Low Temperature Protection
Charging: 23℉~41℉ / -5℃~5℃
Low Temperature Protection
Discharging: -13℉~5℉ / -25℃~15℃
HighTemperature Protection
Charging: 140℉~158℉ / 60℃~70℃
HighTemperature Protection
Discharging: 149℉~167℉ / 65℃~75℃
Ideal Storage Conditions
59℉~86℉ / 15℃~30℃, 55-75% RH
Terminal Bolt Size
M8
Recommended Terminal Torque
16 - 25 N·m
Weight
57.32 lbs / 26 kg
Dimensions
15.08” (L, including side handles) × 7.64” (W) × 10.24” (H, including terminals) / 383 × 194 × 260 mm

Package Includeds

12V 300Ah Lithium Iron Phosphate (LiFePO4) Battery
X 1
M8 Bolts
X 4
User Manual
X 1

Warranty

Material and Workmanship Warranty
3-year material and workmanship warranty

Frequently Asked Questions

Can it be used in cold weather?

This HQST 12.8V 330Ah 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?

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?

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?

Yes, the battery comes with four M8 bolts.

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?

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.