charge rates

[comp75]

What is the formula for figuring max charge amps? I have 2500mAH in my transmitter and 1400 in 1 buggy and 1100 in the other. Please help if you know. All thses are nimh. I also have 1500 nicd packs as well. Are the nicd/nimh different on charge rates?

 

[hpiracer]

hey comp75 i dont think there is a "forumla" to figuring out max charge amps ok i believe for reciever packs no more than 1 amp and nicd packs i think 6 correct me if I'm wrong

 

[FastEddy]

I use this.

1400 = 1.4
2000 = 2.0
2500= 2.5

These are MAXIMUMS If you have time, lower them by 25%

 

[comp75]

I was also informed by a not so experienced person that nicd's can handle higher charge rates than nimh's. It sounded right but just wanted to confirm.

 

[Pinblaster]

The NiMH batters should be charged at the output rate (2000mah=2amps) as FastEddy says. And you heard right about the Nicd's, they can safely be charged at 2x the output mah. 1500mah=1.5amp x2=3amp charge rate. Just be sure you drain the packs to 0.6volts per cell before you charge them. And if you plan to store the packs for more than a week charge the NiMh to 40% and discharge (drain) the Nicd's before you store them. Also never over charge the NiMh packs, when they start getting warm stop charging them. or get a good NiMh charger with a thermo probe, so it stops charging when they heat up. Great Planes Electrifly Triton charger is great for charging all types of batteries and has thermal shutoff(Probe sold sep.).