Thread Starter spike1947 Joined Feb 4, 2016 266 Feb 21, 2016 #1 Hi I am wanting to know how I can rig up a simple trickle charge for 4 x AAA Ni-MH Rechargeable Batteries .I need them to run a 5 volt laser for a security set up I am making . cheers spike
Hi I am wanting to know how I can rig up a simple trickle charge for 4 x AAA Ni-MH Rechargeable Batteries .I need them to run a 5 volt laser for a security set up I am making . cheers spike
Dodgydave Joined Jun 22, 2012 9,873 Feb 21, 2016 #2 Do you want to charge them single or all together in series?
Thread Starter spike1947 Joined Feb 4, 2016 266 Feb 21, 2016 #3 Hi Dodgydave Thanks for your reply , I want to charge them together . cheers spike
Dodgydave Joined Jun 22, 2012 9,873 Feb 21, 2016 #4 So you can use a 12v supply constant current put them all in series, or individual, plenty of circuits on google, http://www.diyelectronicsprojects.c...nimh-battery-charger-circuit-diagram.html?m=1 Last edited: Feb 21, 2016
So you can use a 12v supply constant current put them all in series, or individual, plenty of circuits on google, http://www.diyelectronicsprojects.c...nimh-battery-charger-circuit-diagram.html?m=1
MrAl Joined Jun 17, 2014 7,891 Feb 21, 2016 #5 Hi, Low current is the key to longer life. Maybe C/40 or so. They dont put up with overcharging as well as NiCd.
Hi, Low current is the key to longer life. Maybe C/40 or so. They dont put up with overcharging as well as NiCd.