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PostPosted: Wed Sep 19, 2012 3:11 pm
by quadder

I have just orderd a max Amps battery has anyone used them.
Are they as good quality as they make out 120C rating how's that possible

I am going to be using it on my fpv quadcoptor only get 5min on current setup 3900mah 20c

4x 30a esc
10inch props was using 8inch but required for extra weight
1200kv ntm
Naza Gps

Let me know what you think

Many thanks Alex :D


PostPosted: Thu Sep 20, 2012 7:06 am
by S-rob
Id like to see how they determine C rating & how they test them

Yep you guessed it. C rating on many lipos are BS . Calculated max Amperage is 640 Amps on that batt.
Ive seen tests on youtube where they TRY & push lipos to near the max rated/calculated current, it stuffs them completely. You can get a puffed batt pack after one test run.
The calculated max current drain of a 120c batt would drain it completely in a few secounds. So its really alot of marketing BS
Hyperion actually state NOT to try and test at the max calculated current, as the connectors arent rated for it

Perhaps the "capacity x c-rating" just cant be used anymore. Was it allways just an old wives tale, internet myth ??
But then , if your motor only really needs a 20c rated lipo....