I have a couple of questions regarding RC remote power. I will eventually be using 2 9.6 v RC batts rigged together to power a UA-5 and a JB3.
1) I read in a post by Skalinder that he reccommended using a PTC resettable fuse on the lead wire from the battery. If I have two RC batteries should I use a fuse for both of the pos wires or can I use one just on the line to the UA-5 since the JB3 ext will have a 5v regulator, or do I even need one for RC batteries (I believe he was writing in reference to an SLA)
2) Is there any way to gauge how much juice is left in the batteries without trying to calculate how much is being pulled for how long etc.? I have searched the boards here and looked on quite a few hobby sites and could only seem to find gauges/meters to measure the output voltage and amps. I don't mind keeping track of time and draw, but it would be nice if I could simply watch a charge gauge instead.
I know that the wallyworld li-ion or substitute has a gauge on it but I am planning on going RC at least initially so I can have back up batteries that are reasonably priced and I like the fact that they are hot swappable as well as the smart charger that can charge within a 90 min for 3300 maH.
Many thanks for any help. If there is an existing post out there already I appologize but I have been searching for some time and can't seem to find specific answers to these questions.