# 02 E825 won’t start, yet batteries fully charged

**URL:** <https://community.electricforum.com/t/02-e825-won-t-start-yet-batteries-fully-charged/19267>\
**Category:** GEM Forum\
**Created:** [July 4, 2020, 7:55pm UTC](https://community.electricforum.com/t/02-e825-won-t-start-yet-batteries-fully-charged/19267 "2020-07-04T19:55:21Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Vfrmsea](https://avatars.discourse-cdn.com/v4/letter/v/c0e974/32.png) [@Vfrmsea](https://community.electricforum.com/u/Vfrmsea)\
**Post date:** [July 4, 2020, 7:55pm UTC](https://community.electricforum.com/t/02-e825-won-t-start-yet-batteries-fully-charged/19267/1 "2020-07-04T19:55:21Z")

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Hello! Looking for help with my E825. All 6 batteries are brand new and fully charged. The GEM starts up fine initially after overnight charge, but as soon as I turn it off and try to restart, I get a negative 15 error.

Any ideas? Thanks for the help!

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**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:** [July 5, 2020, 6:38pm UTC](https://community.electricforum.com/t/02-e825-won-t-start-yet-batteries-fully-charged/19267/2 "2020-07-05T18:38:36Z")

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email [rodneyadiehl@aol.com](mailto:rodneyadiehl@aol.com) ask for FSIP check chart

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**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:** [July 5, 2020, 7:48pm UTC](https://community.electricforum.com/t/02-e825-won-t-start-yet-batteries-fully-charged/19267/3 "2020-07-05T19:48:48Z")

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One battery in backwards or bad.  
Check volts at P1 at controller. It must be over 68v or -15.