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Title: help please - can I substitute Lipo for NiMH car battery Post by: shadowstriker on March 02, 2014, 03:01:41 PM I have a model art 4x4 monster truck comes with a 1800 ni-mah battery pack it takes 4 hours to charge and 15 min running time so can i use lipo substitute ni-mah :help:
Title: Re: help please - can I substitute Lipo for NiMH car battery Post by: anwar on March 02, 2014, 07:10:24 PM Welcome to RC India :)
It depends on a few factors, a main one being what kind of speed controller you are using etc. Please post more details of your electrical setup, including what voltage battery you are using now. Also, please do not start topics with the name "help please". Reason and other rules are explained here : http://www.rcindia.org/rc-india-forum/forum-usage-tips/ (http://www.rcindia.org/rc-india-forum/forum-usage-tips/) (see #12). Title: Re: help please - can I substitute Lipo for NiMH car battery Post by: iamahuman on March 02, 2014, 07:22:15 PM Like Anwar said, it depends on the electrical setup in your car.
Let's say that the controller can handle the output of a fully charged lipo, it will not have what's called 'Low Voltage Cutoff". Lipos should be discharged only to a particular extent and going further risks damaging the lipo. Modern controllers monitor voltage and cut power when the voltage sags below a predetermined level. Title: Re: help please - can I substitute Lipo for NiMH car battery Post by: theleabres on March 03, 2014, 09:59:36 AM Until you read the specs of your ESC and it says that it can handle lipo, the answer is NO.
I'm guessing that your nihm battery is 7.2v. Although it seems that the difference between 7.2v and 8.4v (fully charged lipo) is very slight, some car ESCs will burn out as soon as you plug in a 2S lipo. You can also burn out your motor from the excess heat caused by the additional voltage. Title: Re: help please - can I substitute Lipo for NiMH car battery Post by: shadowstriker on March 03, 2014, 05:57:38 PM thanks for all your suggestion
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