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EV3 rechargeable battery pack: charging power supply
Posted: 10 Oct 2013, 18:22
by HaWe
hi,
is there concerns to plug a 12 V DC power supply to the EV3 rechargeable battery pack to charge it?
Re: EV3 rechargeable battery pack: charging power supply
Posted: 10 Oct 2013, 19:31
by pepijndevos
Isn't the pack 9V? I wouldn't try.
Where did you get one BTW? It seems you can only get them from educational resellers.
Re: EV3 rechargeable battery pack: charging power supply
Posted: 10 Oct 2013, 20:00
by h-g-t
I used one of these set to 10v with a 13v supply to charge my NXT battery.
http://www.ebay.co.uk/itm/LM2596-LED-Vo ... 4d1301f580
Re: EV3 rechargeable battery pack: charging power supply
Posted: 10 Oct 2013, 20:05
by mattallen37
The battery pack is actually 7.4v (two 3.7v Lithium Ion cells in series). The official Lego charger is 10v DC. While I have heard of people having success with chargers up to 18v DC, I personally wouldn't try it.
Re: EV3 rechargeable battery pack: charging power supply
Posted: 11 Oct 2013, 10:27
by h-g-t
Re: EV3 rechargeable battery pack: charging power supply
Posted: 11 Oct 2013, 13:50
by mattallen37
No. The Lego battery packs already have a charger built in, they just need an external power supply.