# \-77 error on 96v Lithium setup

**URL:** <https://community.electricforum.com/t/77-error-on-96v-lithium-setup/26109>\
**Category:** GEM Forum\
**Created:** [March 28, 2023, 5:33pm UTC](https://community.electricforum.com/t/77-error-on-96v-lithium-setup/26109 "2023-03-28T17:33:31Z")\
**Posts on this page:** 1\
**Showing post:** 14

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**Author:** ![AssyRequired](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/assyrequired/32/7621_2.png) [@AssyRequired](https://community.electricforum.com/u/AssyRequired)\
**Post date:** [February 6, 2026, 6:44pm UTC](https://community.electricforum.com/t/77-error-on-96v-lithium-setup/26109/14 "2026-02-06T18:44:32Z")

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I was curious and you made me go look.  
At that time it looks like you built your own pack from some ID3/4 bricks. Are you still running these?

 ![image](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/3X/6/0/60897d78defcc5e691edbe3a9f4c133666982da1.jpeg)

Your past topic/thread from 2023 shows you were going through the same thing. (code -77)

> [@Current rating requirements for lithium batteries?](https://community.electricforum.com/t/current-rating-requirements-for-lithium-batteries/25732/36):
>
> Thanks. Kept the lights on and tried again every 30mins or so. Stopped getting the error around 94.8v. I’ve adjusted the BMS to cut off at cell voltage of 3.95v so I end right back up at 94.8. Hopefully that will take care of everything. Even without the top of the voltage curve the range seemed pretty good on my first test drive. Would probably have gotten about the same range as a new set of lead acid batteries, but now that I’m not charging all the way maybe the lithium batteries will l…

You had to knock down the charge via OVP to 3.95 x 24 = 94.8 to clear the -77 error.

If you say your OVP is currently set to 4.2 ← your settings have been reset and in need of a review.  
(Reset is a stupid/easy thing to do. One accidental tap in the app while in admin mode and ALL of the custom settings get wiped. No warning. New app should fix this)

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