battery charge question

[MNorby]

just got this battery
http://www.horizonhobby.com/Products...rodID=ORI10308

and I have a pirahna digital charger. What should I set the max vm/c to for charging that battery and what amp should I charge it at?

[Shaun]

I never really change the VM/C when charging a battery.

The rule with batteries is don't charge a battery at more than its rated mah.

Here is a small chart I put together.


MAH Amp
100... 0.1
200... 0.2
300... 0.3
400... 0.4
500... 0.5
600... 0.6
700... 0.7
800... 0.8
900... 0.9
1000... 1.0
1100... 1.1
1200... 1.2
1300... 1.3
1400... 1.4
1500... 1.5
1600... 1.6
1700... 1.7
1800... 1.8
1900... 1.9
2000... 2.0
2100... 2.1
2200... 2.2
2300... 2.3
2400... 2.4
2500... 2.5
2600... 2.6
2700... 2.7
2800... 2.8
2900... 2.9
3000... 3.0
3100... 3.1
3200... 3.2
3300... 3.3
3400... 3.4
3500... 3.5
3600... 3.6
3700... 3.7
3800... 3.8
3900... 3.9
4000... 4.0
4100... 4.1
4200... 4.2
4300... 4.3
4400... 4.4
4500... 4.5
4600... 4.6
4700... 4.7
4800... 4.8
4900... 4.9
5000... 5.0

[MNorby]

that makes sense is that about all there is to know? I left the mv/c at the numbers that was on the charger, like 12.5 or something

[Shaun]

Well other than a few other things.

If its LIPO and more than one cell, make sure you balance it, don't run the battery all the way down, or it will ruin it.
If its NICD, make sure you run it down all the way before charging it again or it will keep a "memory"
If its NIMH, have fun with it, recharge it when ever, and run it down all the way if you want.

[Reflection]

Originally Posted by MNorby

that makes sense is that about all there is to know? I left the mv/c at the numbers that was on the charger, like 12.5 or something

That chart will work on Sub C's and Lipo's. Some smaller cells,if you follow that chart,you'll bust the cells open,or stand a good chance of it. Getting your cells warm is a good thing.....cooking them is a bad thing.

[MNorby]

is that pack sub c cells? Sorry for the total noob Q's, trying to learn this stuff

[Shaun]

Originally Posted by MNorby

is that pack sub c cells? Sorry for the total noob Q's, trying to learn this stuff

It will be fine on that battery.

The chart should work alright for Sub C(the cells you find in 1/10 vehicles), 2/3A(the cells you find in 1/18 vehicle, and LIPOs.

[floogldood]

Use 5-8 mv per cell for the wolfpack and the digital piranha.

[Chris_The_Battery_Man]

I would never go past 5mv per cell. Generally 3mv or less is safe othewise you can kill packs.... I have alot of customers killing packs because they set it higher.