The Juice Box 52v 4ah Samsung 40T Lithium ion E-Bike Battery

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The Juice Box 52v 4ah Samsung 40T Lithium ion E-Bike Battery

$200.00 $159.99

The Juice Box – never be stranded again – with this spare 52v 4ah Samsung 40T Lithium ion E-Bike Battery!

Made in the USA – Custom built to order – under 3 pounds!

Please read the full description for details.

SKU: JBX4ah Categories: , ,


The Juice Box

Never Run out of Juice again!


Do you suffer from Range Anxiety? Do you have nightmares of running your pack out before you get off the trail or get home from your commute? We’ve got just what you need! Light, small and easy to carry along on any ride. These Samsung 40T cells can EACH put out 30amps continuously, and with 4ah of capacity, it will do the job of helping you home without too much pedaling.

Please read the full description. Lithium Ion batteries can be dangerously. Please make sure you know what you are doing or consult a professional if you are unsure.


* 52v = the power you need.

4ah – enough time get your home.

* Small and Light (UNDER 3 pounds!)

* Awesome spare battery made of top quality components.

* 14s1p – 14 Genuine First Grade Samsung 40T 21700 cells

* 30 amp continuous BMS

* Temperature Protected.

* XT-90s lead wire connectors. NO SPARKS!

* XT60 lead for charger

* Weight of Battery: UNDER 3 pounds

* Life Span: 400-1000 charges


This 52v pack is built with a tight frame for better heat dissipation. Having too much empty air space actually acts as an insulator – trapping the heat inside the pack (think double-pane windows). Connections are made with solid Nickel strips, spot welder to each cell. Each cell and each series is tested before assembly. The BMS will prevent over charging and will balance the cells after a full charge. It basically makes your battery as safe and as efficient as possible.


With all rechargeable batteries, please take great care when charging. Never, ever short out the battery in any way. Failure to safely use this battery can result in fire, explosions, destruction, loss of life, loss of marriage, bad burns and an upset stomach.


ONLY CHARGE THIS BATTERY IN A PLACE WHERE YOU WOULDN’T MIND STARTING A FIRE. NEVER LEAVE A CHARGING BATTERY HOME ALONE. Some people put their battery and charger in a BBQ grill with the lid on so that if anything bad happens it would be contained. There are also ammo-boxes and safe, metal boxes for charging battery packs. Basically, use your head. We make these batteries as safe as possible, but stuff can go wrong. Jeez, even Tesla has had its share of battery fires in their cars. Nuf said about that…

Please note: Do not attempt to drink this “juice box.”  “Juice” is a slang term for electricity, and ingestion can be fatal, or worse.



Each E-bike battery is custom built-to-order and NOT sitting on a shelf wasting battery life. Please allow 2-8 business days to ship out, but don’t afraid to ask if you need clarification.

Additional information

Weight 2.5 lbs

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