AUTOCESSKING

Autocessking 12V 100Ah Group 31 LiFePO4 Lithium Deep Cycle Battery

$299.99 $149.99 Save 50%
Quick Features
🔸 🔋 Lightweight Group 31 Lithium Upgrade – Measures 13" x 6.77" x 8.66", designed as a perfect Group 31 deep cycle replacement. Weighs only 1/3 of lead-acid batteries while delivering 2× power and 8× longer lifespan
⚡ 100A Smart BMS Protection – Built-in advanced BMS protects against overcharge, over-discharge, overcurrent, short circuit, and extreme temperatures. Features auto-recovery within 1 second, no manual reset required
🔁 4000–15000 Cycles & 10+ Years Lifespan – Provides 4000+ cycles at 100% DOD and up to 15000 cycles at partial use, lasting up to 10 years—significantly reducing replacement costs
📈 Stable Power with Full 100Ah Capacity – Delivers consistent output across the entire discharge cycle with a flat voltage curve, ensuring reliable performance without sudden power drops
❄️🔥 Wide Temperature Protection – Operates in extreme conditions from -4℉ to 140℉ (-20℃ to 60℃). Built-in protection automatically activates outside safe ranges to extend battery life
🚐 Versatile for Multiple Applications – Ideal for RV, camping, solar systems, trolling motors, marine, fish finders, ice fishing, and off-grid power
🛡️ Grade A LiFePO4 Cells for Safety – Made with premium, non-toxic lithium iron phosphate cells offering excellent thermal stability, no leakage, and no fire risk
🌱 Maintenance-Free & Eco-Friendly – No acid, no fumes, and can be safely installed in any position
⚠️ Designed for Energy Storage – Not intended for engine starting applications (e.g., cars or golf carts)
BAC-0136
Size: Group 31

Pickup currently unavailable at NJ 1305


Product information

Our goal is to ship out orders that have been placed and paid for the same day. However, due to situations like missed shipment cut-off times, holidays, weekends, and other events out of our control, your shipment may be fulfilled 1-2 business days after an order is placed.

Shipping Outside the Contiguous 48 States

While we do not ship directly outside the 48 united states, we can work with your freight forwarder to accommodate your orders. You, the customer, are responsible for paying all customs duties, taxes, and other additional fees applied upon export. The freight forwarder is responsible for inspecting the packages before accepting to deliver them. Once the packages are accepted by the freight forwarder, Hykolity is not responsible for any damage or loss of the packages.We do not ship our products to the following:

  • P.O. boxes
  • Military APO
  • States/territories outside the contiguous U.S. including Hawaii, Alaska, Puerto Rico, and the Virgin Islands
  • Countries outside of the United States
Out-of-Stock/Back-Ordered Products Policy


If your order includes out-of-stock items, the remaining in-stock items will be shipped as soon as the order is paid for. Back-ordered items will be sent to you via ground shipping at no additional charge when the stock is replenished. You can request the order to be shipped in one batch when all items are available.

Cancellation Policy

If you wish to cancel an order that has NOT been shipped, contact our customer service department at inquiry@weizeus.com or call (562)456-0507. We will do our best to assist you in a timely fashion. Special order items and items marked as shipped cannot be canceled after the order is processed. Returned items are subject to restocking fees. If an order cannot be canceled, you will be able to return eligible items, shipping charges may apply.

Disclaimer

1. WEIZE cannot be held responsible or liable for delayed shipments caused by events beyond our control. These events may encompass but are not limited to, natural disasters, acts of God, power and server outages, as well as omissions from carriers, transmitters, phone companies, and internet service providers.

2. We do not offer pickup service for orders valued below $1,000 USD. If your order meets this requirement and you need pickup service, please contact us immediately after placing your order.

Return Policy:

Our return policy allows you 30 days from the date of item delivery to request a return. Please note that returns are not accepted after this 30-day period.

Eligibility Criteria:

To be eligible for a return, your item must be in its original, unworn, and unused condition, including all items inside the box and in their original packaging. Customers are required to provide photos and videos of the products and boxes. Additionally, a receipt or proof of purchase is necessary.

Initiating a Return:

To start a return, please contact us at inquiry@weizeus.com. If your return is approved, we'll provide detailed instructions on where and how to send your package.

Important Note:

  1. Used items can only be returned if there are quality issues.
  2. Customers are responsible for processing and shipping costs for both delivery and return if they purchase the wrong product or no longer want it.

Procedure Reminder:

Ensure you request a return before sending back items. Items returned without prior authorization will not be accepted. WEIZE is not liable for the shipping costs incurred by customers returning packages without authorization.

Non-Returnable Items:

Items that fall under the following categories are non-returnable:

  1. Giveaways or free items
  2. Used items
  3. Items damaged due to human causes
  4. Products from unauthorized resellers
  5. Items in large orders

Defective or Damaged Products:

If the product is defective or damaged, please provide photos or videos to our customer service within 10 days of receiving the goods. We will cover the return (exchange) shipping costs. Failure to do so within 10 days or a lack of response will make the buyer responsible for any loss.

Return Process:

Upon receiving returned items, we will verify the product's condition within 2-3 business days and initiate a refund within the next 3 business days. We will notify you of the refund status. Approved refunds will be automatically processed through your original payment method. Please note that the bank or credit card company may require additional time to complete the refund.

Limited Warranty:

WEIZE comes with a 1-year/2-year/5-year/10-year Limited Warranty covering defects in materials and workmanship under normal use. The warranty is only applicable to original purchasers and starts on the purchase date. It does not extend if the product is repaired or replaced.

The Warranty does not cover damage due to improper use, failure to follow instructions, unauthorized repair, external causes beyond our control, or force majeure events (e.g., fire, earthquake, lightning, water damage).

Process the warranty, please enter this link: Warranty

If you have any questions, please contact us at inquiry@weizeus.com.

Thank you for choosing to shop with us! We prioritize the security and reliability of every transaction, utilizing advanced payment encryption technology to safeguard your information. Additionally, our website is protected by SSL encryption, ensuring that your personal and payment details remain private and secure.

We offer three convenient payment options: PayPal, Credit/Debit Cards, and Affirm Installments. Below are the details of each payment method:

PayPal Payment

PayPal is a trusted, secure, and widely-used payment method for online transactions.

1. With PayPal, you can send payments quickly and securely online.

2. Even if you don’t have a PayPal account, you can still check out by selecting "Pay with Debit/Credit Card." This option will redirect you to a secure PayPal page where you can enter your payment details and complete the transaction safely.

3. If you choose to pay with PayPal, you will be redirected to the PayPal payment page, where you can log in with your PayPal username and password to confirm the payment.

Credit/Debit Card Payment

We accept the following credit and debit cards:

✔ Visa ✔ MasterCard ✔ American Express ✔ Discover ✔ Shop Pay ✔ Google Pay ✔ Apple Pay

Simply enter your card details at checkout, and your payment will be processed securely.

Pay with Affirm (Shop Pay Installments)

For added flexibility, we offer Shop Pay Installments in partnership with Affirm, allowing you to split your purchase into convenient payments.

1. At checkout, select Shop Pay Installments to view your available installment options.

2. Choose the plan that works best for you and complete your purchase with easy, manageable payments.

We strive to provide a safe, seamless, and flexible payment experience for our customers. If you have any questions or need assistance with your payment, feel free to contact our support team. Email: inquiry@weizeus.com

Battery Cell Composition LiFePO4 cell Nominal Voltage & Rated Capacity 12.8V 100Ah
Self-discharge Rate(77℉/25℃) 3%/month Charge Voltage 14.6±0.2V
Float Charge Voltage 13.8V Standard Charge/Discharge Current 20A
Recommended Charge Current ≤50A Recommended Discharge Current ≤100A
Allowed Max. Charge/Discharge Current 100A Peak Discharge Current 200A (3 seconds)
Storage Temperature Range -5°C ~ 45°C / 23°F ~ 113°F Operating Charge Temperature Range 0°C ~ 45°C / 32°F ~ 113°F
Operating Discharge Temperature Range -20°C ~ 60°C / -4°F ~ 140°F Internal Resistance ≤30mΩ
Serial Connection Maximum 4 units Parallel Connection Maximum 10 units
Product Dimensions 330.2x172.0x214.9 mm / 13x6.77x8.46 in Product Weight 11.97 kg / 26.4 lbs
Cycle Life@100%DOD ≥2000 cycles Warranty 10-year

Unlock the Future of Power Storage - 10-Year Warranty on LiFePO4 Batteries!

Please note: This 12V 100Ah battery is designed for energy storage applications, not for engine starting.

⚡ Advanced 100A BMS Protection

The built-in 100A Battery Management System (BMS) ensures complete protection:

  • Overcharge & over-discharge protection
  • Overcurrent & short circuit protection
  • High & low temperature protection

✔ Automatically cuts off when needed
✔ Auto-recovers within 1 second
✔ No manual reset required

🔁 Long Lifespan – Up to 15000 Cycles

  • 4000+ cycles at 100% DOD
  • Up to 15000 cycles at partial use
  • 10+ years lifespan

Compared to lead-acid batteries:
👉 Lasts 3–8× longer
👉 Saves significantly on replacement costs

🔋 Powerful & Efficient Energy Storage

With 1280Wh of energy capacity and a stable voltage output, this battery provides reliable and consistent performance throughout the entire discharge cycle—no sudden drops like traditional lead-acid batteries.

Perfect for:

  • RV power systems
  • Solar energy storage
  • Marine & trolling motors
  • Camping & outdoor use
  • Off-grid applications

 

 

WEIZE Powering Your Drive, Tools, and Life.

WEIZE delivers dependable performance across every corner of your life. From high-quality batteries and automotive tools to rugged car lifts and outdoor equipment, WEIZE is your trusted source for reliable power and durable solutions. Whether you're working on your vehicle, upgrading your workshop, or taking on outdoor projects, we’ve got you covered — all with fast shipping and competitive prices. Choose WEIZE for strength, value, and peace of mind.

FAST, FREE DELIVERY

PAY WITH EASE

HASSLE-FREE WARRANTY

30-DAY MONEY-BACK GUARANTEE

Built to Power. Made to Last.

Discover how customers power their lives with WEIZE.