# "Balance Cable Must be Plugged In" **URL:** \ **Category:** Batteries and Chargers\ **Created:** [February 27, 2025, 3:16pm UTC](https://discuss.bluerobotics.com/t/balance-cable-must-be-plugged-in/19556 "2025-02-27T15:16:58Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![TheCollector](https://avatars.discourse-cdn.com/v4/letter/t/bc79bd/32.png) [@TheCollector](https://discuss.bluerobotics.com/u/TheCollector)\ **Post date:** [February 27, 2025, 3:16pm UTC](https://discuss.bluerobotics.com/t/balance-cable-must-be-plugged-in/19556/1 "2025-02-27T15:16:58Z")
Just bought my first BlueRov2 and cant get the battery to charge. Keeps telling me the balance cable isnt plugged in but it most definitely is. Any ideas? ![Image](https://us1.discourse-cdn.com/flex019/uploads/bluerobotics/original/2X/9/9730e464ae0a0c29b0969ccbbde275cd2a67deda.jpeg) I’ve tried contacting them but got no response. ---
**Author:** ![EliotBR](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/eliotbr/32/6937_2.png) [@EliotBR](https://discuss.bluerobotics.com/u/EliotBR)\ **Post date:** [February 27, 2025, 4:02pm UTC](https://discuss.bluerobotics.com/t/balance-cable-must-be-plugged-in/19556/2 "2025-02-27T16:02:22Z")
Hi @TheCollector, Sorry to hear you’re having issues with charging your battery! Is it showing you 4 cell voltages plus a total voltage before you try to start charging? From the information you’ve provided, I’d guess that the cable is either not fully seated / plugged in, or one or more of the connections are damaged/broken somewhere. > [@TheCollector](#): > > I’ve tried contacting them but got no response. Was this through our [product problems form](https://bluerobotics.com/help/?want=report), or some other means? That form is the best way to make sure the support team receive and can respond meaningfully to your request. ---
**Author:** ![TheCollector](https://avatars.discourse-cdn.com/v4/letter/t/bc79bd/32.png) [@TheCollector](https://discuss.bluerobotics.com/u/TheCollector)\ **Post date:** [February 27, 2025, 4:33pm UTC](https://discuss.bluerobotics.com/t/balance-cable-must-be-plugged-in/19556/3 "2025-02-27T16:33:23Z")
I clicked the Contact Us link on your site and selected “Report a problem with a product” option from the dropdown. ---
**Author:** ![TheCollector](https://avatars.discourse-cdn.com/v4/letter/t/bc79bd/32.png) [@TheCollector](https://discuss.bluerobotics.com/u/TheCollector)\ **Post date:** [February 27, 2025, 4:53pm UTC](https://discuss.bluerobotics.com/t/balance-cable-must-be-plugged-in/19556/4 "2025-02-27T16:53:41Z")
Here’s what it shows on the previous screen. > **(attachments)** > > ![PXL_20250227_165303756.jpg](https://us1.discourse-cdn.com/flex019/uploads/bluerobotics/original/2X/9/90d1d52833fe7b7a29ab26168d5925a4ae497071.jpeg) ---
**Author:** ![tony-white](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/tony-white/32/18385_2.png) [@tony-white](https://discuss.bluerobotics.com/u/tony-white)\ **Post date:** [February 27, 2025, 5:15pm UTC](https://discuss.bluerobotics.com/t/balance-cable-must-be-plugged-in/19556/5 "2025-02-27T17:15:31Z")
Hi @TheCollector - Support will email you back, but as detailed in the battery care [guide](https://bluerobotics.com/learn/battery-info/#battery-charging:~:text=Do%20not%20discharge%20the%20battery%20below%20its%20minimum%20voltage.%20This%20kills%20the%20battery), that battery is dead! Anything below 12V will permanently damage the battery - that should be recycled. Sorry for the news! ---
**Author:** ![TheCollector](https://avatars.discourse-cdn.com/v4/letter/t/bc79bd/32.png) [@TheCollector](https://discuss.bluerobotics.com/u/TheCollector)\ **Post date:** [February 27, 2025, 5:31pm UTC](https://discuss.bluerobotics.com/t/balance-cable-must-be-plugged-in/19556/6 "2025-02-27T17:31:18Z")
Is this a common problem? It’s a brand new battery. Just got it last week. ---
**Author:** ![tony-white](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/tony-white/32/18385_2.png) [@tony-white](https://discuss.bluerobotics.com/u/tony-white)\ **Post date:** [February 27, 2025, 5:50pm UTC](https://discuss.bluerobotics.com/t/balance-cable-must-be-plugged-in/19556/7 "2025-02-27T17:50:03Z")
It’s a common problem, if only because to err is human! Chances are the battery was left connected to the ROV for too long, and it drained it to the point of no return…It’s good to always disconnect and remove the battery when done with a dive! ---
**Author:** ![TheCollector](https://avatars.discourse-cdn.com/v4/letter/t/bc79bd/32.png) [@TheCollector](https://discuss.bluerobotics.com/u/TheCollector)\ **Post date:** [February 27, 2025, 6:04pm UTC](https://discuss.bluerobotics.com/t/balance-cable-must-be-plugged-in/19556/8 "2025-02-27T18:04:43Z")
I haven’t used it yet.