# 2013 e2 Battery Upgrade
**URL:** https://community.electricforum.com/t/2013-e2-battery-upgrade/25655
**Category:** GEM Forum
**Created:** [January 10, 2023, 5:17pm UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655 "2023-01-10T17:17:28Z")
**Posts on this page:** 20
**Page:** 2
### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [January 30, 2023, 4:02am UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/31 "2023-01-30T04:02:31Z")
Is that correct? Old version hard to find and may not work on new bms. I know the last batch needed new app.
@Garthhh
---
### Author:  [@Garthhh](https://community.electricforum.com/u/Garthhh)
#### Post date: [February 8, 2023, 7:47pm UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/36 "2023-02-08T19:47:19Z")
The BMS is powered up
The APP v4.11.0 on Chromebook doesn’t connect
Bluetooth is on
What else should I try?
---
### Author:  [@Garthhh](https://community.electricforum.com/u/Garthhh)
#### Post date: [February 8, 2023, 7:48pm UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/37 "2023-02-08T19:48:42Z")
What is the light for?
---
### Author:  [@Garthhh](https://community.electricforum.com/u/Garthhh)
#### Post date: [February 8, 2023, 10:11pm UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/39 "2023-02-08T22:11:25Z")
Thanks for the reply
My phone is android 10, too old for the app
The chromebook will download the app from the playstore,
I toggled BT & scanned for the BMS a few times
---
### Author:  [@AssyRequired](https://community.electricforum.com/u/AssyRequired)
#### Post date: [February 8, 2023, 10:23pm UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/40 "2023-02-08T22:23:23Z")
Is there a red led blinking on the BMS?
It could have been timing on pic snap that caught this in the OFF blink state.
---
### Author:  [@Garthhh](https://community.electricforum.com/u/Garthhh)
#### Post date: [February 8, 2023, 11:15pm UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/41 "2023-02-08T23:15:31Z")
I would like hook up the new pack from the top of the service bed, so I can work out all the details before removing the Lead Acid pack
How big should the wires be?
How many months before the BMS discharges the Lithium pack too much?
---
### Author:  [@djgabriel2004](https://community.electricforum.com/u/djgabriel2004)
#### Post date: [February 8, 2023, 11:32pm UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/43 "2023-02-08T23:32:14Z")
Here is the link
> **[SUPPORT - JK BMS](https://www.jkbms.com/support/)**
>
> Fill out the contact boxes and we will get in touch with you as soon as we can
> JKBMS has professional Battery BMS/Battery Balancer/Battery monitors engineer team to desing high quality series BMS/Balancer/Monitors support...
App is called enjpower, download it from your phone. I use it all the time
I still don’t know why has another name but it looks identical
Might need to unzip it, and ofc allow to install unknown apps
---
### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [February 9, 2023, 1:00am UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/45 "2023-02-09T01:00:25Z")
---
### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [February 9, 2023, 1:00am UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/46 "2023-02-09T01:00:41Z")
---
### Author:  [@ScottyD](https://community.electricforum.com/u/ScottyD)
#### Post date: [February 9, 2023, 3:51am UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/47 "2023-02-09T03:51:19Z")
I made this as simple as possible, push button start, no 9v battery needed. Garth, if you are having problems please call or text
---
### Author:  [@Garthhh](https://community.electricforum.com/u/Garthhh)
#### Post date: [February 9, 2023, 8:29pm UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/51 "2023-02-09T20:29:41Z")
My GEM is my only way to transport a passenger, once I take the LA pack out I’m stuck making the new pack work in less than a week
My health has been problematic for some time, I’m not always able to crawl around on the ground or troubleshoot temperamental apps for the hours involved
I don’t have a helper who is conversant in the technology
Doing the work in smaller chunks is going to be easier & minimize the potential interruption of service
Lashing down the pack & making up a couple of cables is hardly twice the work. soldering a couple of lugs on some 00 [my guess on size] is no big
Being stuck on the BMS part of the program isn’t increasing my confidence in a no fuss plug n play solution
A solution that didn’t require me to navigate wireless hell & isn’t dependent on the vagaries of the Play Store would be more reliable long term
That I have to let some random company track my location, doesn’t give me warm fuzzies
What is BalON?
I’ll try some of the solutions [thanks to everyone for the links] offered as my energy & schedule permit
I suspect the chromebook isn’t working because there is no cell receiver, so no location services
I can get it all to work, I’m just exploring my options
Thanks to everyone for the support
---
### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [February 11, 2023, 2:07pm UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/54 "2023-02-11T14:07:58Z")
---
### Author:  [@Garthhh](https://community.electricforum.com/u/Garthhh)
#### Post date: [February 11, 2023, 7:18pm UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/55 "2023-02-11T19:18:09Z")
I got the current version of the app working on the chromebook
Turning on location services even though it’s not connected to the internet & entering 1234 made it work
The BMS is already programmed
I still have no idea why I need to communicate with the battery pack other than troubleshooting a bad BMS/pack/cell?
---
### Author:  [@djgabriel2004](https://community.electricforum.com/u/djgabriel2004)
#### Post date: [February 11, 2023, 7:30pm UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/56 "2023-02-11T19:30:00Z")
Which version did you use?
---
### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [February 11, 2023, 7:46pm UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/57 "2023-02-11T19:46:47Z")
> [@Garthhh](#):
>
> I still have no idea why I need to communicate with the battery pack
You do not. You can remove app once battery is working.
Nice to have along in case you run battery dead and get stranded.
---
### Author:  [@Garthhh](https://community.electricforum.com/u/Garthhh)
#### Post date: [February 11, 2023, 7:58pm UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/58 "2023-02-11T19:58:41Z")
What would you do with the BMS if the battery is dead & you are stranded?
---
### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [February 11, 2023, 8:03pm UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/59 "2023-02-11T20:03:20Z")
Set it to emergency mode and limp to a charger. Not always safe depending on how bms is programmed.
Some settings are preferences. Not carved in stone.
I like to set the bms to trip early, leaving enough juice to get back to the barn.
None of this matters if you charge battery before it goes dead.
It’s just another upside of lithium and BMS.
Bible:
Say you set bms uvp to 3.5v 12% left. Set bms to emergency and limp home.
If set to \<3.4v. Dead is dead. Don’t run it that low.
I know this seems overly complicated… But any battery can go dead. Just don’t do that. 🙂
It won’t hurt battery like it would lead, bms protects it. But it is a huge inconvenience needing a tow.
---
### Author:  [@Garthhh](https://community.electricforum.com/u/Garthhh)
#### Post date: [February 12, 2023, 5:12pm UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/60 "2023-02-12T17:12:52Z")
Not as complicated as a LA pack being ruined by one mistake I would probably find a place to plug in or have AAA bring me home, before messing with settings…
I’m pretty well programmed to park n plug 😃
No periodic maintenance tasks involving the samsung battery pack?
How much will the range suffer from temps in the 10’s, 20’s?
My parking/charging stays above freezing
GEMs beyond Tires, Brakes & occasionally brushes, don’t need much
The cost to own per month is low, insurance & registration around half
GEMs are easier to drive and park than a full sized car
The lower speed is safer
There is a sizable contingent of people who live in this building that have a similar use case to mine
---
### Author:  [@Inwo](https://community.electricforum.com/u/Inwo)
#### Post date: [February 12, 2023, 5:37pm UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/61 "2023-02-12T17:37:35Z")
> [@Garthhh](#):
>
> No periodic maintenance tasks involving the samsung battery pack?
> How much will the range suffer from temps in the 10’s, 20’s?
No maintenance.
Doubt you will notice less range. I have not received feedback on low temperature performance.
---
### Author:  [@Garthhh](https://community.electricforum.com/u/Garthhh)
#### Post date: [April 2, 2023, 6:05pm UTC](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655/62 "2023-04-02T18:05:52Z")
I’m back
Installed pack
BMS shows 46% charge
Turned on main, turned on key
Black screen
Plugged in charger, lights blink
Whats next?
[Previous page](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655.md?page=1)
[Next page](https://community.electricforum.com/t/2013-e2-battery-upgrade/25655.md?page=3)