# Changed EVERYTHING,,, Need some advice **URL:** \ **Category:** GEM Forum\ **Created:** [October 10, 2020, 1:57am UTC](https://community.electricforum.com/t/changed-everything-need-some-advice/20028 "2020-10-10T01:57:03Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![ApacheshoresGEM](https://avatars.discourse-cdn.com/v4/letter/a/7bcc69/32.png) [@ApacheshoresGEM](https://community.electricforum.com/u/ApacheshoresGEM)\ **Post date:** [October 10, 2020, 1:57am UTC](https://community.electricforum.com/t/changed-everything-need-some-advice/20028/1 "2020-10-10T01:57:03Z")
NEW R4FUN Motor, New R4Fun controller, New 72-12 converter, new PSDM and relativly new batteries… Installed everything tonight and \>\>\>\>\> I did a down the street and back run (100yards max) and it was badly lacking power. At the PSDM I had 73.2V. With my meter clamped on the pos and neg on the back of the PSDM I stepped on the brake and gas, dropped to 61V, let off back to 72V. I think i may have 1 or more bad batteries. All are well within warranty so I can possibly swap them all out. Thoughts??? ---
**Author:** ![ApacheshoresGEM](https://avatars.discourse-cdn.com/v4/letter/a/7bcc69/32.png) [@ApacheshoresGEM](https://community.electricforum.com/u/ApacheshoresGEM)\ **Post date:** [October 10, 2020, 1:57am UTC](https://community.electricforum.com/t/changed-everything-need-some-advice/20028/2 "2020-10-10T01:57:59Z")
BTW, if your keeping track of the progression, NO MORE FLASHING DASH LIGHTS… 99.9% sure it was the PSDM… ---
**Author:** ![MikeKC](https://avatars.discourse-cdn.com/v4/letter/m/90ced4/32.png) [@MikeKC](https://community.electricforum.com/u/MikeKC)\ **Post date:** [October 10, 2020, 2:01pm UTC](https://community.electricforum.com/t/changed-everything-need-some-advice/20028/3 "2020-10-10T14:01:52Z")
Yes, that sounds like a bad battery, or two. ---
**Author:** ![ApacheshoresGEM](https://avatars.discourse-cdn.com/v4/letter/a/7bcc69/32.png) [@ApacheshoresGEM](https://community.electricforum.com/u/ApacheshoresGEM)\ **Post date:** [October 10, 2020, 4:52pm UTC](https://community.electricforum.com/t/changed-everything-need-some-advice/20028/4 "2020-10-10T16:52:59Z")
Indicator went to full bars over night, showing full charge, backed out of garage, stepped on the gas peddle and went about 4 miles per hour… In about 100 feet showed one red bar and flashing turtle… Also still had meter connected, 73.3 at start, 61.1 after 100’… I am going to swap them all… I am ready to have her back… ---
**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:** [October 10, 2020, 6:25pm UTC](https://community.electricforum.com/t/changed-everything-need-some-advice/20028/5 "2020-10-10T18:25:10Z")
Sounds like an ideal time for a lithium upgrade. ---
**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:** [October 10, 2020, 8:02pm UTC](https://community.electricforum.com/t/changed-everything-need-some-advice/20028/6 "2020-10-10T20:02:07Z")
did you jump your temp sensor ? ---
**Author:** ![ApacheshoresGEM](https://avatars.discourse-cdn.com/v4/letter/a/7bcc69/32.png) [@ApacheshoresGEM](https://community.electricforum.com/u/ApacheshoresGEM)\ **Post date:** [October 13, 2020, 10:36pm UTC](https://community.electricforum.com/t/changed-everything-need-some-advice/20028/7 "2020-10-13T22:36:26Z")
No, how do you do that? ---
**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:** [October 13, 2020, 10:53pm UTC](https://community.electricforum.com/t/changed-everything-need-some-advice/20028/8 "2020-10-13T22:53:08Z")
R4F motors dont have temp sensors . So take the 2 wire plug that normally plugs into the motor and jump the 2 wires together . Your Gem is in fault mode without doing that . ---
**Author:** ![ApacheshoresGEM](https://avatars.discourse-cdn.com/v4/letter/a/7bcc69/32.png) [@ApacheshoresGEM](https://community.electricforum.com/u/ApacheshoresGEM)\ **Post date:** [October 14, 2020, 12:09am UTC](https://community.electricforum.com/t/changed-everything-need-some-advice/20028/9 "2020-10-14T00:09:53Z")
I just checked, I did that when I installed the motor, just forgot. The other piece he sends to trick the speed control is also installed. ---
**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:** [October 14, 2020, 11:46pm UTC](https://community.electricforum.com/t/changed-everything-need-some-advice/20028/10 "2020-10-14T23:46:40Z")
You have a bad battery . Forget what the dash says . Charge it all the way . Then put you volt meter on each battery . Put it in gear . Hold down the brake pedal and give it some power . The bad battery will have a much lower voltage.