Battery Charge Time Calculator

[sherman]

I phoned technical support for my Duratrax IntelliPeak Digital Pulse Charger for recommended fast charge rates, formulas for slow charge times, etc.

While asking him what length of time I should expect to wait for until completion on slow charge with my charger, he worked out a number with the assistance of a reference website. He kindly gave me the URL and hopefully this will be usefull to all airsofters in charging their batteries:

http://www.csgnetwork.com/batterychgcalc.html

If you want a second opinion, just do a search for 'battery charge time calculator' on google and you'll get others, which give similar results anyway.

[LUTNIT]

The actual mAh capacity can be vastly different from the listed capacity because of age of the cells, amount of use, environment (humidity, temperature, etc.), and quality of the cells. Using a delta peak charger is still the best option in my opinion, a good one since the cheap ones (the $20 ones that airsoft retailers seem to charge $65-80 for) can false peak and not charge the packs properly or not stop charging and damage the packs. I had one of the "smartchargers" I snagged off of ebay and it fragged one battery pack and wouldn't charge several others past a few hundred mAh (higher quality chargers work perfectly with said packs, other than the fragged one of course.)

[sherman]

Yeah for fast chargers, that's definately valid.

But if your gonna slow charge or trickle charge, then this can give you a good ballpark of how long you can leave it on the grill for.

[CDN_Stalker]

Originally Posted by LUTNIT

The actual mAh capacity can be vastly different from the listed capacity because of age of the cells, amount of use, environment (humidity, temperature, etc.), and quality of the cells. Using a delta peak charger is still the best option in my opinion, a good one since the cheap ones (the $20 ones that airsoft retailers seem to charge $65-80 for) can false peak and not charge the packs properly or not stop charging and damage the packs. I had one of the "smartchargers" I snagged off of ebay and it fragged one battery pack and wouldn't charge several others past a few hundred mAh (higher quality chargers work perfectly with said packs, other than the fragged one of course.)

NERRRRRRRRRRRRRRRRRDDDDDDDDD!!!!



I just go by the simple math of milliamps per hour of the battery, and by the charge rate I set my charger at. 600mAh will charge in roughly 40mins at a setting of 1A; my 1400mAh will be about 1.5 hours; my 3300mAh will be 3.3hours at 1A, or around 45mins if I blast it at 4A (which I never do).

Then again, I just wait til my charger starts beeping.

[Greylocks]

Ballpark is still guesswork. When your gaming depends on your batteries, it's only wise to invest in a really good charger that can do everything. Including trickle charging if you wish.

The last thing I'd want would be for my AEG to die in the middle of nowhere because I cut corners on battery maintenance and proper equipment.

[Azriel_Strife]

This doesn't mention voltages. My wall charger has an output of 12v DC @ 300Ma. This charger came with an 1100Mah 8.4v mini type ni-mh battery.

is asks the input charge rate and output of the battery, but asks nothing about voltage input. Some 8.4v chargers I have are only 8.4v @ 250Mah.

what gives?

[mcguyver]

8.4v output will not charge an 8.4v battery. You need atleast 1 volt over cell voltage to charge. Your charger may be telling you the battery it's rated for, not it's actual output.

Only way you're going to know that is to use a mutlimeter and see what the charge voltage actually is.

[ThunderCactus]

My pirahna charges all my battery packs at 9.6v, I set it to .1A/100mah, I find my batteries charge really fast, no abnormal heat problems either lol