# Batteries and Chargers **URL:** https://discuss.bluerobotics.com/c/blue-robotics-products/batteries-and-chargers/35.md [Latest](https://discuss.bluerobotics.com/latest.md) · [Categories](https://discuss.bluerobotics.com/categories.md) · [Tags](https://discuss.bluerobotics.com/tags.md) --- ## [Max ah charge of H6 Pro Charger](https://discuss.bluerobotics.com/t/max-ah-charge-of-h6-pro-charger/23557)
**Author:** [@johng](https://discuss.bluerobotics.com/u/johng)\ **Replies:** 5\ **Last updated:** [September 7, 2026, 11:51pm UTC](https://discuss.bluerobotics.com/t/max-ah-charge-of-h6-pro-charger/23557 "2026-09-07T23:51:59Z")
Hi all I have a new 42 ah 6s lipo battery that I want to power an M500 motor with. I am having trouble finding a charger that can plug into the wall on normal 240v power to charge such a big battery with. I have an olde… --- ## [Batttery charger showing wrong battery type](https://discuss.bluerobotics.com/t/batttery-charger-showing-wrong-battery-type/23397)
**Author:** [@Alex\_UJI1](https://discuss.bluerobotics.com/u/Alex_UJI1)\ **Replies:** 0\ **Last updated:** [July 28, 2026, 8:46am UTC](https://discuss.bluerobotics.com/t/batttery-charger-showing-wrong-battery-type/23397 "2026-07-28T08:46:09Z")
Hello, We own a H6 PRO R1 Lithium Battery Charge and we have used it to charge Bluerobotics Lithium Polymer Batteries (14.8V, 10Ah) and Bluerobotics 4S Lithium-ion Batteries. We haven’t had any issue for the past 3 year… --- ## [AS150U-F connector to replace XT90 and JST](https://discuss.bluerobotics.com/t/as150u-f-connector-to-replace-xt90-and-jst/23301)
**Author:** [@Eloi](https://discuss.bluerobotics.com/u/Eloi)\ **Replies:** 1\ **Last updated:** [July 9, 2026, 7:08pm UTC](https://discuss.bluerobotics.com/t/as150u-f-connector-to-replace-xt90-and-jst/23301 "2026-07-09T19:08:45Z")
Hello, I dislike the XT90-power and JST-balance combo for the 18Ah battery. I am thinking of replacing it with a single AS150U-F connector. Do you think it is a good idea? Motivations are : less fragile wires when ha… --- ## [Lipo Bag for Blue robotics battery](https://discuss.bluerobotics.com/t/lipo-bag-for-blue-robotics-battery/5299)
**Author:** [@Ledge](https://discuss.bluerobotics.com/u/Ledge)\ **Replies:** 4\ **Last updated:** [July 5, 2026, 8:52pm UTC](https://discuss.bluerobotics.com/t/lipo-bag-for-blue-robotics-battery/5299 "2026-07-05T20:52:54Z")
Does anybody know of a lipo bag for Blue Robotics Batteries.? Thanks ! --- ## [Recent SDS for 10Ah Battery?](https://discuss.bluerobotics.com/t/recent-sds-for-10ah-battery/23160)
**Author:** [@coanderson](https://discuss.bluerobotics.com/u/coanderson)\ **Replies:** 1\ **Last updated:** [June 13, 2026, 2:07am UTC](https://discuss.bluerobotics.com/t/recent-sds-for-10ah-battery/23160 "2026-06-13T02:07:30Z")
Hi there, we are shipping the BR batteries internationally and the port would like updated SDS sheets for the blue robotics batteries, specifically the 10Ah one (although 18Ah would be great too). Is there a way we can g… --- ## [Does the battery monitor connector include the battery terminals?](https://discuss.bluerobotics.com/t/does-the-battery-monitor-connector-include-the-battery-terminals/22726)
**Author:** [@RyanRana](https://discuss.bluerobotics.com/u/RyanRana)\ **Replies:** 2\ **Last updated:** [April 1, 2026, 12:36am UTC](https://discuss.bluerobotics.com/t/does-the-battery-monitor-connector-include-the-battery-terminals/22726 "2026-04-01T00:36:34Z")
Hi, I am working on creating a battery management system for 14.8V 10Ah Blue Robotics batteries. Can I short the high-power out connection with the other highest cell monitor pin on the battery? Is this okay as well wit… --- ## [Battery current-peaks](https://discuss.bluerobotics.com/t/battery-current-peaks/22690)
**Author:** [@Erlingns95](https://discuss.bluerobotics.com/u/Erlingns95)\ **Replies:** 1\ **Last updated:** [March 26, 2026, 7:43pm UTC](https://discuss.bluerobotics.com/t/battery-current-peaks/22690 "2026-03-26T19:43:28Z")
Hello guys! I want to learn more about the electronics we are working with. We are trying to create a few different garage-builds, and find it intriguing to mix the different BR batteries and thrusters. Wanting to follo… --- ## [12V battery limit](https://discuss.bluerobotics.com/t/12v-battery-limit/22596)
**Author:** [@Pulsar79](https://discuss.bluerobotics.com/u/Pulsar79)\ **Replies:** 10\ **Last updated:** [March 16, 2026, 2:04pm UTC](https://discuss.bluerobotics.com/t/12v-battery-limit/22596 "2026-03-16T14:04:27Z")
Hello, I have always read that when we are operating with the Blue Boat, we should make sure that the batteries do not drop below 12V. The thing is that when it is running and we are pushing the motors hard, the voltage… --- ## [Blueboat Li-Ion battery over-discharge voltage?](https://discuss.bluerobotics.com/t/blueboat-li-ion-battery-over-discharge-voltage/22556)
**Author:** [@jobotics](https://discuss.bluerobotics.com/u/jobotics)\ **Replies:** 0\ **Last updated:** [March 3, 2026, 6:13pm UTC](https://discuss.bluerobotics.com/t/blueboat-li-ion-battery-over-discharge-voltage/22556 "2026-03-03T18:13:28Z")
We are using the BlueBoat with 2 of these baterries: Lithium-ion Battery for the BlueROV2 and Other Subsea Applications . We have left the batteries that were around the recommended storage voltage connected to the BlueB… --- ## [Parallel battery connection for four T500](https://discuss.bluerobotics.com/t/parallel-battery-connection-for-four-t500/21664)
**Author:** [@sample](https://discuss.bluerobotics.com/u/sample)\ **Replies:** 0\ **Last updated:** [September 25, 2025, 8:19am UTC](https://discuss.bluerobotics.com/t/parallel-battery-connection-for-four-t500/21664 "2025-09-25T08:19:33Z")
Hi BlueRobotics, We have four of your Lithium-ion batteries (14.8 V, 18 Ah) and are looking for the best way to safely connect them in parallel to power four T500 thrusters along with supporting electronics. We already… --- ## [Do LiPo batteries fit in BlueROV2 (heavy configuration) enclosure?](https://discuss.bluerobotics.com/t/do-lipo-batteries-fit-in-bluerov2-heavy-configuration-enclosure/20886)
**Author:** [@Megan](https://discuss.bluerobotics.com/u/Megan)\ **Replies:** 4\ **Last updated:** [July 10, 2025, 4:11pm UTC](https://discuss.bluerobotics.com/t/do-lipo-batteries-fit-in-bluerov2-heavy-configuration-enclosure/20886 "2025-07-10T16:11:40Z")
Hello, My colleague and I just arrived abroad with our new BlueROV2, only to find that the Blue Robotics Lithium Polymer Batteries (14.8V, 10Ah) we brought - which are listed as a recommended battery for the BlueROV2 -… --- ## [Battery charging in water tight enclosure](https://discuss.bluerobotics.com/t/battery-charging-in-water-tight-enclosure/9189)
**Author:** [@Thesim](https://discuss.bluerobotics.com/u/Thesim)\ **Replies:** 12\ **Last updated:** [July 7, 2025, 12:39pm UTC](https://discuss.bluerobotics.com/t/battery-charging-in-water-tight-enclosure/9189 "2025-07-07T12:39:00Z")
I plan to purchase the BR Lithium Ion battery 14.8V18Ah pack. However, to minimize the risk of the battery water tight enclosure not properly sealed every time the battery is taken out for charging and deployment, I plan… --- ## [Charge continuously from the surface](https://discuss.bluerobotics.com/t/charge-continuously-from-the-surface/20839)
**Author:** [@Rov1](https://discuss.bluerobotics.com/u/Rov1)\ **Replies:** 1\ **Last updated:** [July 6, 2025, 6:58pm UTC](https://discuss.bluerobotics.com/t/charge-continuously-from-the-surface/20839 "2025-07-06T18:58:21Z")
How can I make my own surface-mounted ROV battery charging station? I want it to deliver power while the ROV is operating, so I can have more time working with it. Thanks. --- ## [Battery Protection](https://discuss.bluerobotics.com/t/battery-protection/12879)
**Author:** [@johannv](https://discuss.bluerobotics.com/u/johannv)\ **Replies:** 4\ **Last updated:** [June 15, 2023, 3:56pm UTC](https://discuss.bluerobotics.com/t/battery-protection/12879 "2023-06-15T15:56:47Z")
Hello team, I am wondering if there is any battery protection in the 18Ah, 15.6Ah, or 10Ah batteries at all. Cheers, J --- ## ["Balance Cable Must be Plugged In"](https://discuss.bluerobotics.com/t/balance-cable-must-be-plugged-in/19556)
**Author:** [@TheCollector](https://discuss.bluerobotics.com/u/TheCollector)\ **Replies:** 7\ **Last updated:** [February 27, 2025, 6:04pm UTC](https://discuss.bluerobotics.com/t/balance-cable-must-be-plugged-in/19556 "2025-02-27T18:04:43Z")
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? I’ve tried contacting them but got no response. --- ## [H6 Pro Charger R2 not charging battery](https://discuss.bluerobotics.com/t/h6-pro-charger-r2-not-charging-battery/19102)
**Author:** [@Sam31](https://discuss.bluerobotics.com/u/Sam31)\ **Replies:** 4\ **Last updated:** [January 22, 2025, 12:51am UTC](https://discuss.bluerobotics.com/t/h6-pro-charger-r2-not-charging-battery/19102 "2025-01-22T00:51:33Z")
I have a H6 pro charger that currently has locked firmware and a 14.8V lithium ion battery. I am not able to get the charger to charge the battery, I believe it is over-drained as the battery is reading 2.3V on the charg… --- ## [Battery charger - reset](https://discuss.bluerobotics.com/t/battery-charger-reset/18769)
**Author:** [@RiccaSuso](https://discuss.bluerobotics.com/u/RiccaSuso)\ **Replies:** 5\ **Last updated:** [December 5, 2024, 4:52pm UTC](https://discuss.bluerobotics.com/t/battery-charger-reset/18769 "2024-12-05T16:52:10Z")
Good morning, I am having some issue with a charger since I am not able (differently from the others) to select the battery type, the current and all the settings I should be able to have according to technical specific… --- ## [H6 PRO battery charger incidence (storage task)](https://discuss.bluerobotics.com/t/h6-pro-battery-charger-incidence-storage-task/18628)
**Author:** [@Pere](https://discuss.bluerobotics.com/u/Pere)\ **Replies:** 9\ **Last updated:** [December 2, 2024, 4:51pm UTC](https://discuss.bluerobotics.com/t/h6-pro-battery-charger-incidence-storage-task/18628 "2024-12-02T16:51:59Z")
Hi, We had our Li 4S 18Ah battery charged and we wanted to put it in storage mode, so we started the storage task and, for the first two minutes, it was shown on the screen “Storage discharge” but, suddenly, it switche… --- ## [Capacity over, break down - charging error](https://discuss.bluerobotics.com/t/capacity-over-break-down-charging-error/18390)
**Author:** [@kamen\_mali](https://discuss.bluerobotics.com/u/kamen_mali)\ **Replies:** 3\ **Last updated:** [October 30, 2024, 1:35pm UTC](https://discuss.bluerobotics.com/t/capacity-over-break-down-charging-error/18390 "2024-10-30T13:35:21Z")
Hi everyone, I have a problem with a charger or maybe a battery. I am trying to charge pack of 4 blue robotics Li-ion batteries 14.8V / 18Ah as the picture shows but after cca hour and 40 minutes I got the message that… --- ## [Travel on airplane with BR2 batteries (USA)](https://discuss.bluerobotics.com/t/travel-on-airplane-with-br2-batteries-usa/13454)
**Author:** [@aighost](https://discuss.bluerobotics.com/u/aighost)\ **Replies:** 4\ **Last updated:** [October 25, 2024, 4:16pm UTC](https://discuss.bluerobotics.com/t/travel-on-airplane-with-br2-batteries-usa/13454 "2024-10-25T16:16:15Z")
Has anyone recently flew on a plane with their BR2? Needing to travel soon with mine and am concerned TSA will not allow the batteries onboard. I know they cannot go in my checked baggage but I’m concerned they will not … --- ## [Can I use this way for the Battery wiring](https://discuss.bluerobotics.com/t/can-i-use-this-way-for-the-battery-wiring/18280)
**Author:** [@elhedody](https://discuss.bluerobotics.com/u/elhedody)\ **Replies:** 1\ **Last updated:** [October 15, 2024, 4:45pm UTC](https://discuss.bluerobotics.com/t/can-i-use-this-way-for-the-battery-wiring/18280 "2024-10-15T16:45:26Z")
Hello, is it possible that I can connect the QS8 connector direct to the power cable without this connection in the middle? can you advice if this possible, why we have it that way with the connections. --- ## [Adding a second PSM](https://discuss.bluerobotics.com/t/adding-a-second-psm/18215)
**Author:** [@Erlingns95](https://discuss.bluerobotics.com/u/Erlingns95)\ **Replies:** 7\ **Last updated:** [October 9, 2024, 8:30pm UTC](https://discuss.bluerobotics.com/t/adding-a-second-psm/18215 "2024-10-09T20:30:47Z")
Hey Guys! We have a custom built ROV powered by two 22.2V batteries(28Ah). These are neither daisy-chained nor parallel-wired, simply split up to supply different things. We have one PSM connected to the navigator, but … --- ## [Safely and correctly installing a battery](https://discuss.bluerobotics.com/t/safely-and-correctly-installing-a-battery/17642)
**Author:** [@marinesolutions](https://discuss.bluerobotics.com/u/marinesolutions)\ **Replies:** 0\ **Last updated:** [August 6, 2024, 4:52am UTC](https://discuss.bluerobotics.com/t/safely-and-correctly-installing-a-battery/17642 "2024-08-06T04:52:31Z")
Hi - we are new to this game - we have a BlueRov2 - heavy config. Looking for a video that shows how to correctly and safely install a LI-4S-18AH-R1 battery. Currently we are finding the XT90 connector is completely cr… --- ## [Using only 22V battery for modified ROV](https://discuss.bluerobotics.com/t/using-only-22v-battery-for-modified-rov/17235)
**Author:** [@Erlingns95](https://discuss.bluerobotics.com/u/Erlingns95)\ **Replies:** 0\ **Last updated:** [June 23, 2024, 2:36pm UTC](https://discuss.bluerobotics.com/t/using-only-22v-battery-for-modified-rov/17235 "2024-06-23T14:36:23Z")
Hi! We are trying to build an ROV using BR products, and were wondering if its possible to supply this with only a 22V battery? I guess we would need some sort of transformer in front of the electronics-tube, but if we … --- ## [High voltage sag, not charging](https://discuss.bluerobotics.com/t/high-voltage-sag-not-charging/17099)
**Author:** [@Dwayne](https://discuss.bluerobotics.com/u/Dwayne)\ **Replies:** 1\ **Last updated:** [June 9, 2024, 7:42pm UTC](https://discuss.bluerobotics.com/t/high-voltage-sag-not-charging/17099 "2024-06-09T19:42:28Z")
I have a 4s6p Molicel p26a pack from blue robotics that I am having a hard time charging. I am using an old iCharger 106B+. What’s happening is when I charge the battery the voltage increases quite a bit with a very low … --- ## [Qgroundcontrol - Battery Indictor](https://discuss.bluerobotics.com/t/qgroundcontrol-battery-indictor/16558)
**Author:** [@Lcolville77](https://discuss.bluerobotics.com/u/Lcolville77)\ **Replies:** 4\ **Last updated:** [April 13, 2024, 4:38pm UTC](https://discuss.bluerobotics.com/t/qgroundcontrol-battery-indictor/16558 "2024-04-13T16:38:24Z")
Hi, I’m using the latest version of Qgroundcontrol to operate our Blue ROV 2 vehicle. I use Blue Robotics supplied LI-4S-15.6AH-R1 Lithium 14.8v 15.6AH batteries to power the ROV. My issue is that both batteries are f… --- ## [Question about batteries below the minimum discharge voltage](https://discuss.bluerobotics.com/t/question-about-batteries-below-the-minimum-discharge-voltage/16385)
**Author:** [@oneironautics](https://discuss.bluerobotics.com/u/oneironautics)\ **Replies:** 1\ **Last updated:** [March 28, 2024, 10:03am UTC](https://discuss.bluerobotics.com/t/question-about-batteries-below-the-minimum-discharge-voltage/16385 "2024-03-28T10:03:42Z")
I recently acquired three older Blue Robotics 14.8V 18Ah batteries that have been sitting on a shelf for an indeterminate period of time. Two of the batteries are above 15V, but one battery is below 10V (see attached pho… --- ## [Battery charger error](https://discuss.bluerobotics.com/t/battery-charger-error/16346)
**Author:** [@Mariushaukland](https://discuss.bluerobotics.com/u/Mariushaukland)\ **Replies:** 1\ **Last updated:** [March 22, 2024, 7:34am UTC](https://discuss.bluerobotics.com/t/battery-charger-error/16346 "2024-03-22T07:34:41Z")
Hi Trying to charge batteries. When trying lipo charge, it gives error on battery check. See picture. Any suggestions? --- ## [Using batteries in parallel](https://discuss.bluerobotics.com/t/using-batteries-in-parallel/14502)
**Author:** [@rperkins](https://discuss.bluerobotics.com/u/rperkins)\ **Replies:** 4\ **Last updated:** [November 16, 2023, 1:11am UTC](https://discuss.bluerobotics.com/t/using-batteries-in-parallel/14502 "2023-11-16T01:11:22Z")
Hello, All I know this has come up before but not in at least a few years, so I thought I’d check with the community to see what the current advice is re: connecting BR batteries in parallel. Apparently the BlueBoat se… --- ## [Discharging BlueROV2 batteries for storage](https://discuss.bluerobotics.com/t/discharging-bluerov2-batteries-for-storage/14972)
**Author:** [@RobinC](https://discuss.bluerobotics.com/u/RobinC)\ **Replies:** 2\ **Last updated:** [October 11, 2023, 1:54am UTC](https://discuss.bluerobotics.com/t/discharging-bluerov2-batteries-for-storage/14972 "2023-10-11T01:54:30Z")
Hi all, I have two black and one white BlueROV2 batteries that are currently at 16.3V. I want to discharge them to storage voltage. I have the (old) Lithium Battery Charger from BlueRobotics with an in-built storage an… [Next page](https://discuss.bluerobotics.com/c/blue-robotics-products/batteries-and-chargers/35.md?page=1)