[quote]ORIGINAL: fatfreddy17

Immediately after each flight you need to check your battery voltage UNDER LOAD!!

''Voltwatch'' has no load, which is great if you are going to fly your plane under NO LOAD. If you have a bad cell Voltwatch won't help you.

Try something like this ,, http://www.horizonhobby.com/Products...?ProdID=HAN171

It is $40, but when compared to the cost of your airplane,,,, it really sucks to lose an airplane because of batteries run too low.

Also very important to charge and maintain your battery PROPERLY.
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that is a really nice DIGITAL volt meter........if the OP wants to save a little money he can buy a hobbico scaled volt meter for around $9.00 on e-bay or $25.00 at tower hobbies.......i bought my last two on e-bay for less than $10.00 shipped.......FYI, the term scaled means there are two color bars on the voltmeter......one red and one green.....very simple, green means your alright to fly, red means you need to charge your batteries first.......i know most flyers already know this but, i have to mention it for somebody out there that didn't........sure hope this helped.......(KOOLKRABBER47)...........