Battery Storage Box 12V 7Ah to 20Ah with 3S BMS for Lead Acid Replacement

$211.94

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Color: gray

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We accept returns within 30 days of delivery. Items must be unworn, unwashed, and returned with original tags attached.

Care Instructions

To preserve the beauty of your dress, we recommend gentle hand washing or dry cleaning. Do not bleach. Hang or lay flat to dry. Steam or iron on low heat if needed.

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Orders are processed within 1–3 business days.

Standard Shipping: 5–9 business days — $3.95
Express Shipping: 4–7 business days — $9.95

Delivery times are estimates and may vary depending on your location. Tracking information will be provided once your order has been shipped.

Upgrade your power system with this durable 12V battery storage box designed to convert standard 18650 lithium cells into a compact, high-capacity battery pack. Built with ABS plastic and equipped with a 3S 20A BMS, this enclosure provides safe, stable performance for e-bikes, UPS systems, motorcycles, and other 12V applications. It offers a lightweight alternative to bulky lead-acid batteries while supporting efficient, reliable power output.

Key Features

Suitable for creating 12V 7Ah–20Ah lithium battery packs
Includes 3S 20A BMS for safe charging, discharging, and protection
Compartment holds 3×7 (21 pcs) 18650 cells
Strong ABS plastic housing for durability and heat resistance
Lightweight design ideal for replacing traditional lead-acid batteries
Available in multiple colors: yellow, green, black, blue, gray
Size: 5.90 in × 2.55 in × 3.70 in

Why Choose Our Battery Storage Box

This battery box provides a practical way to convert 18650 lithium cells into a safer and more efficient 12V power solution. The built-in 3S BMS helps protect your battery from overcharging, over-discharging, and short circuits, ensuring stable operation in demanding environments. It’s perfect for DIY battery projects and users wanting a long-lasting alternative to heavy lead-acid units.

Perfect For

DIY 12V lithium battery building
E-bike battery replacements
Motorcycle battery conversion
12V backup systems and uninterrupted power supplies
Replacing aging lead-acid batteries with lighter, higher-efficiency solutions

📏 Product Dimensions

Measurement	Size
Length	150 mm → 5.90 in
Width	65 mm → 2.55 in
Height	94 mm → 3.70 in

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Battery Storage Box 12V 7Ah to...

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$211.94

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Battery Storage Box 12V 7Ah to 20Ah with...

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what our customers say about us

4.9

Based on 100+ Reviews

4.9

12136 Reviews

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Emily R.

Verified Buyer

Perfect for a summer wedding

I wore this to my cousin's wedding and felt amazing all day. The fit was exactly as expected, and I received so many compliments. I ordered my usual size S.

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O

Olivia H.

Verified Buyer

Beautiful dress

Really happy with this purchase. I only wish I had steamed it before trying it on because it arrived with a few wrinkles from shipping.

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Sarah T.

Verified Buyer

So flattering

I have a hard time finding dresses that fit my waist properly, but this one was perfect. Very comfortable to wear for several hours.

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Chloe W.

Verified Buyer

Worth every dollar

The quality surprised me. The material has a nice weight and doesn't feel see-through at all. I'll definitely order another style.

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Amanda K.

Verified Buyer

Engagement photo approved

Bought this for our engagement photos and couldn't be happier. It looked beautiful in natural light and fit perfectly.

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N

Nicole B.

Verified Buyer

Runs slightly roomy

I was between sizes and ordered the larger one. It still looked great, but I probably could have gone with my usual size.

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H

Hannah C.

Verified Buyer

Comfortable all evening

Wore this to a formal dinner and didn't have to adjust it once. It stayed comfortable from start to finish.

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M

Megan L.

Verified Buyer

Love the quality

Beautiful stitching and a really elegant design. It feels much more expensive than it actually is.

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R

Rachel S.

Verified Buyer

True to size

I followed the size chart and ordered a Medium. It fit exactly the way I wanted.

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A

Ashley D.

Verified Buyer

Received so many compliments

Everyone kept asking where I bought this dress. It's simple, elegant, and easy to accessorize.

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Lauren P.

Verified Buyer

Vacation favorite

Packed this for my trip to Italy and wore it twice. It's lightweight, comfortable, and photographs beautifully.

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B

Brittany G.

Verified Buyer

Lovely dress

The zipper was a little stiff the first time, but after wearing it once everything worked perfectly. Overall, I'm very happy.

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K

Kayla N.

Verified Buyer

Helpful customer service

I wasn't sure which size to buy, so I contacted support first. They recommended a Small, and it fit perfectly.

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Battery Storage Box 12V 7Ah to 20Ah with 3S BMS for Lead Acid Replacement