Braava 380t Spare Battery - How to charge?

News and information about the iRobot Braava - formerly the Evolution Mint Robotic Cleaner. All discussion and troubleshooting questions go here.

Braava 380t Spare Battery - How to charge?

Postby tks » April 14th, 2017, 4:20 am

Bought the iRobot Braava 380t. Would say I am 80% satisfied. On the other hand, I am 98% satisfied with my Xiaomi Mi Robot Vacuum Cleaner. My short video on the Braava 380t: https://youtu.be/TKbP-WtPvso

My main complaint is that the battery runs out fast and I have to recharge for a few hours before I can use it again. Hence, I am not able to complete mopping my entire house in one afternoon. I found that I can buy spare batteries for about $15 from Amazon and taobao.

https://www.amazon.com/Tenergy-2000mAh- ... ZV7YJPNP74

https://ezbuy.sg/product/20000004544196.html

Seems easy enough to replace the battery: https://homesupport.irobot.com/app/answ ... es-battery.

But I do not want to have to charge the battery in the Braava. Can I buy or fabricate an external charger so that I can be using the Braava and charging the spare? And when the Braava runs out of battery, I will swap the batteries, one to use and the other to charge?
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Re: Braava 380t Spare Battery - How to charge?

Postby mfortuna » April 14th, 2017, 7:31 am

You will probably need to make an adapter for the plug but any RC charger for NIMH/NICAD batteries will work.

Putting wire/pins into the red and black locations and hooking up with alligator clips would work.
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Re: Braava 380t Spare Battery - How to charge?

Postby rickp51 » May 13th, 2017, 9:06 am

you can connect a RC with this male connector that matches the batteries for the braava/mint:

https://www.digikey.com/product-detail/en/molex-connector-corporation/22-05-7055/WM18903-ND/403344

with these connector pins:

https://www.digikey.com/product-detail/en/molex-llc/0039000160/WM9661CT-ND/3904983

then you have an external charger for your extra battery :D
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Re: Braava 380t Spare Battery - How to charge?

Postby saba11 » May 14th, 2017, 12:00 pm

I think you can't do that with Braava 380t
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Re: Braava 380t Spare Battery - How to charge?

Postby rickp51 » May 18th, 2017, 9:35 pm

well, that's what i did with my 380t and it seems to be working for me... i have one battery charging while the second one is running the unit ...
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