# Adding 7th lead battery to gem **URL:** \ **Category:** Uncategorized\ **Created:** [May 22, 2019, 12:40am UTC](https://community.electricforum.com/t/adding-7th-lead-battery-to-gem/16116 "2019-05-22T00:40:29Z")\ **Posts on this page:** 15\ **Page:** 1
**Author:** ![Jlrooks1](https://avatars.discourse-cdn.com/v4/letter/j/d9b06d/32.png) [@Jlrooks1](https://community.electricforum.com/u/Jlrooks1)\ **Post date:** [May 22, 2019, 12:40am UTC](https://community.electricforum.com/t/adding-7th-lead-battery-to-gem/16116/1 "2019-05-22T00:40:29Z")
Looking to add a 7th battery to my 02 gem 4 lead setup. Have inwo spoof installed. Looking for some guidance on how you did it and how much speed increase is realistic. ---
**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:** [May 22, 2019, 1:04am UTC](https://community.electricforum.com/t/adding-7th-lead-battery-to-gem/16116/2 "2019-05-22T01:04:39Z")
I’m still waiting for **any** report. I don’t know if @Old_Houseboater ever got it done. ---
**Author:** ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Post date:** [May 22, 2019, 3:21pm UTC](https://community.electricforum.com/t/adding-7th-lead-battery-to-gem/16116/3 "2019-05-22T15:21:47Z")
3 months experience. The car LOVES 84 volts. 21" diameter tires 8.9 gearbox RFF Black motor (breathed on by me) INWO Spoof 42 MPH 20 mile range at 30 MPH Cruise at 35 MPH From 38 to 42 MPH it eats range. Spins tires DANGEROUS!!! in rain. with the tires I have on it, This is a CHEAP upgrade and doesn’t affect ride. My extra battery is in the trunk. I charge 6 batterys with the Zivan and the extra with a 12 volt charger. ---
**Author:** ![JarJarJava](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/jarjarjava/32/15158_2.png) [@JarJarJava](https://community.electricforum.com/u/JarJarJava)\ **Post date:** [May 22, 2019, 4:22pm UTC](https://community.electricforum.com/t/adding-7th-lead-battery-to-gem/16116/4 "2019-05-22T16:22:21Z")
Thanks for the info, I was actually kind of wondering / thinking about how a stock '02 might behave with an extra battery and how many things needed to be changed. Any issues with the DC / DC converter at 84 VDC input? ---
**Author:** ![Jlrooks1](https://avatars.discourse-cdn.com/v4/letter/j/d9b06d/32.png) [@Jlrooks1](https://community.electricforum.com/u/Jlrooks1)\ **Post date:** [May 22, 2019, 4:58pm UTC](https://community.electricforum.com/t/adding-7th-lead-battery-to-gem/16116/5 "2019-05-22T16:58:50Z")
Same here. My car is stock except for inwo spoof to raise speed limit. Stock motor ---
**Author:** ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Post date:** [May 22, 2019, 6:18pm UTC](https://community.electricforum.com/t/adding-7th-lead-battery-to-gem/16116/6 "2019-05-22T18:18:16Z")
Not so far. In a message dated 5/22/2019 12:32:39 PM Eastern Standard Time, [electricforum@discoursemail.com](mailto:electricforum@discoursemail.com) writes: ---
**Author:** ![JarJarJava](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/jarjarjava/32/15158_2.png) [@JarJarJava](https://community.electricforum.com/u/JarJarJava)\ **Post date:** [May 22, 2019, 7:33pm UTC](https://community.electricforum.com/t/adding-7th-lead-battery-to-gem/16116/7 "2019-05-22T19:33:47Z")
Thanks Rodney. I found the other thread, I have a question about something you wrote, I’ll ask it there. ---
**Author:** ![Jlrooks1](https://avatars.discourse-cdn.com/v4/letter/j/d9b06d/32.png) [@Jlrooks1](https://community.electricforum.com/u/Jlrooks1)\ **Post date:** [May 25, 2019, 11:26pm UTC](https://community.electricforum.com/t/adding-7th-lead-battery-to-gem/16116/8 "2019-05-25T23:26:40Z")
Hey. I added the 7th battery and ran the leads to the on off switch. 7th battery negative to the positive wire from battery 5 and vice versa on the other connection on the switch. Turned switch off to break the 6 series and hooked cables to battery 7. Got error code 16 ---
**Author:** ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Post date:** [May 26, 2019, 12:15am UTC](https://community.electricforum.com/t/adding-7th-lead-battery-to-gem/16116/9 "2019-05-26T00:15:31Z")
Thats exactly right. The control is sensing over voltage. You have to add one of Daves (INWO) 12 volt spoof on pin (1) of the 23 pin plug. Make sure you know how to release the wire . You CANNOT just pull out the wire and push a new one in. You have to remove the plug - pull the red part down to release the wires then remove and replace the #1 wire with the spoof and plug the original into the back of the spoof. Good Luck Rodney In a message dated 5/25/2019 7:36:46 PM Eastern Standard Time, [electricforum@discoursemail.com](mailto:electricforum@discoursemail.com) writes: ---
**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:** [May 30, 2019, 9:46pm UTC](https://community.electricforum.com/t/adding-7th-lead-battery-to-gem/16116/10 "2019-05-30T21:46:36Z")
[https://www.electriccarpartscompany.com/DELTA-Q-CHARGERS](https://www.electriccarpartscompany.com/DELTA-Q-CHARGERS) ![image](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/2X/6/61817fc28e88470d26db8564556ccab3987551ad.png) ![image](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/2X/f/f8a226bcd24219c1a5368b811e389dddb8eac598.png) ---
**Author:** ![Jlrooks1](https://avatars.discourse-cdn.com/v4/letter/j/d9b06d/32.png) [@Jlrooks1](https://community.electricforum.com/u/Jlrooks1)\ **Post date:** [June 8, 2019, 10:50pm UTC](https://community.electricforum.com/t/adding-7th-lead-battery-to-gem/16116/11 "2019-06-08T22:50:53Z")
Ok. So added a 7th battery. Now 84v lead acid. Inwo spoof and magic magnet. Lifted car with 22 inch tires. Stock motor on 2002 e4 and still only 26mph. Somebody help. What next? ---
**Author:** ![Old\_Houseboater](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/old_houseboater/32/544_2.png) [@Old\_Houseboater](https://community.electricforum.com/u/Old_Houseboater)\ **Post date:** [June 16, 2019, 9:48pm UTC](https://community.electricforum.com/t/adding-7th-lead-battery-to-gem/16116/12 "2019-06-16T21:48:28Z")
You have to reprogram controller. ---
**Author:** ![Jlrooks1](https://avatars.discourse-cdn.com/v4/letter/j/d9b06d/32.png) [@Jlrooks1](https://community.electricforum.com/u/Jlrooks1)\ **Post date:** [June 16, 2019, 10:05pm UTC](https://community.electricforum.com/t/adding-7th-lead-battery-to-gem/16116/13 "2019-06-16T22:05:59Z")
Is there anywhere to rent a programmer. I had seen it mentioned a few times on the forum ---
**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:** [June 16, 2019, 10:15pm UTC](https://community.electricforum.com/t/adding-7th-lead-battery-to-gem/16116/14 "2019-06-16T22:15:02Z")
I can build a T1 USB cable that adds a programming port to your T1. $75 if you can find sentry sw. ---
**Author:** ![Jlrooks1](https://avatars.discourse-cdn.com/v4/letter/j/d9b06d/32.png) [@Jlrooks1](https://community.electricforum.com/u/Jlrooks1)\ **Post date:** [June 16, 2019, 11:33pm UTC](https://community.electricforum.com/t/adding-7th-lead-battery-to-gem/16116/15 "2019-06-16T23:33:04Z")
Running 84v on stock settings seems to be really reducing my range