# Adding battery to Gem **URL:** \ **Category:** GEM Forum\ **Created:** [March 3, 2016, 8:48am UTC](https://community.electricforum.com/t/adding-battery-to-gem/5814 "2016-03-03T08:48:43Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [March 3, 2016, 8:48am UTC](https://community.electricforum.com/t/adding-battery-to-gem/5814/1 "2016-03-03T08:48:43Z")
This came up in another thread. We (kinghappy) have been discussing the option of perking up performance with addition of 3-6 volts to battery pack. Plan on doing some testing as time permits. Received a quote for 10 amp single cell 3.65 lithium chargers. $35 delivered. With sample order of 10 pcs. They also make a 20 amp version for + $10. I’m going to wait a few days to see if anyone wants in. Most of these are over $100 retail. There is a cheap plastic one on Ebay for $28 + $17. ---
**Author:** ![IssaquahWA1979](https://avatars.discourse-cdn.com/v4/letter/i/91b2a8/32.png) [@IssaquahWA1979](https://community.electricforum.com/u/IssaquahWA1979)\ **Post date:** [March 3, 2016, 1:04pm UTC](https://community.electricforum.com/t/adding-battery-to-gem/5814/2 "2016-03-03T13:04:39Z")
I seriously caution you using cheap Lithium chargers, especially LiOn I am sure you have seen the exploding batteries in E-Cigs and hoverboards? There is a lot of thought going into those cases that the chargers are actually to blame vs. the battery itself. Just saying be cautious… ---
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [March 3, 2016, 2:45pm UTC](https://community.electricforum.com/t/adding-battery-to-gem/5814/3 "2016-03-03T14:45:18Z")
Thanks, this is only cheap in price. It is made by a large lithium battery manufacturer. LifePO4 ---
**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Post date:** [March 6, 2016, 5:06pm UTC](https://community.electricforum.com/t/adding-battery-to-gem/5814/4 "2016-03-06T17:06:40Z")
Dave, good price but you could easily get away with a smaller amp charger . a 60ah lithium battery is about equivalent to a 100ah la battery . so even a 5ah lipo charger would recharge a single cell fast enough . I assume you are going to connect it so it independently charges while you plug in the main charger . this could be like adding a turbo to a standard battery pack. ---
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [March 6, 2016, 6:20pm UTC](https://community.electricforum.com/t/adding-battery-to-gem/5814/5 "2016-03-06T18:20:40Z")
That’s what I’m thinking. They have a 20A for a couple bucks more. Holding off for a while. Can’t catch up on my other projects. Looking at “hybrid auto” for leaf packs. Hard to justify lead. My one Gem only gets 9 miles before limping. ☹ My 48v tomberlin has good 48v flooded but is a dog. Don’t know what to do first. Do you think a kit would sell? Or just the chargers, if it worked out? Do you thing I should go with a single leaf cell? The LiFePo4 might be safer. ---
**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Post date:** [March 6, 2016, 6:45pm UTC](https://community.electricforum.com/t/adding-battery-to-gem/5814/6 "2016-03-06T18:45:25Z")
the leaf’s don’t come as a single cell , there are 2 in a module , in series . lifepo4 would be fine . remember leaf/ chevy volt are all limn cells . higher voltage ( 4.2v max)then the traditional lifepo4 cells (3.65v max) . make sure you get the right compatible charger . ---
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [March 6, 2016, 6:52pm UTC](https://community.electricforum.com/t/adding-battery-to-gem/5814/7 "2016-03-06T18:52:58Z")
Would have to add minimum 2 cells then. 8.4 volt max. Better price than lifepo4 I think. Watt for watt. 8.4v 10a charger is a little more money. $50 ---
**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Post date:** [March 6, 2016, 6:59pm UTC](https://community.electricforum.com/t/adding-battery-to-gem/5814/8 "2016-03-06T18:59:59Z")
leaf cells are great bang for the buck