Ant Posted February 6 Share Posted February 6 Any ideas on alternative batteries to my usual AA 4 cell square type for my sports gliders, size is about the limit for narrow moulded types, maybe Lipo/lion/life with a voltage regulator. What is everyone using nowadays. TIA. Link to comment Share on other sites More sharing options...
satinet Posted February 6 Share Posted February 6 I think the most common cells are 2x 18650. With some people using 18500 if space is limited. That would give you effectively the same voltage as a 2s lipo/lion battery which can be a problem if it's a model without HV servos. Link to comment Share on other sites More sharing options...
Phil.Taylor Posted February 6 Share Posted February 6 Eneloop / Instant AA packs still work fine for me. My F3Fs have 18500s - one has a Castle Creations 10amp BEC to drop the voltage for old- skool low voltage servos Phil. Link to comment Share on other sites More sharing options...
Ant Posted February 6 Author Share Posted February 6 39 minutes ago, satinet said: I think the most common cells are 2x 18650. With some people using 18500 if space is limited. That would give you effectively the same voltage as a 2s lipo/lion battery which can be a problem if it's a model without HV servos. Can these be brought already soldered as a pair. TIA. Link to comment Share on other sites More sharing options...
Phil.Taylor Posted February 6 Share Posted February 6 Yes - overlander has them https://www.overlander.co.uk/liion-batteries.html Link to comment Share on other sites More sharing options...
Ant Posted February 6 Author Share Posted February 6 26 minutes ago, Phil.Taylor said: Eneloop / Instant AA packs still work fine for me. My F3Fs have 18500s - one has a Castle Creations 10amp BEC to drop the voltage for old- skool low voltage servos Phil. This could work in the gliders with a bit more room. A smaller bec (in size) would be neede in a couple of the tighter fitting fix’s. Ta. Link to comment Share on other sites More sharing options...
satinet Posted February 6 Share Posted February 6 I think the problem with AA eneloop is that the newer servos draw more current than say the days of the s3150. On old models the doesn't matter I guess but I wouldn't use them with a load of MKS or kst etc. I certainly don't miss the 2/3a nimh packs they were troublesome for me. The 18650/18500 is a good shape for glider noses plus you get high capacity, high current and good cold weather performance in a hard case. Really the only downside is higher voltage. They're not even particularly expensive. Funny how your mentally changes because I avoid NiMH these days. Maybe they weren't that bad. Expect AAA, and 2/3a. Maybe they were I don't know... The other alternative is lifepo4 batteries which you can get in a size similar to 2/3a and the voltage is around 6.5v which can work. https://www.componentshop.co.uk/6-6v-1600mah-3c-lifepo4-receiver-rc-battery-long-type-vapex.html Link to comment Share on other sites More sharing options...
Ant Posted February 6 Author Share Posted February 6 1 hour ago, satinet said: I think the problem with AA eneloop is that the newer servos draw more current than say the days of the s3150. On old models the doesn't matter I guess but I wouldn't use them with a load of MKS or kst etc. I certainly don't miss the 2/3a nimh packs they were troublesome for me. The 18650/18500 is a good shape for glider noses plus you get high capacity, high current and good cold weather performance in a hard case. Really the only downside is higher voltage. They're not even particularly expensive. Funny how your mentally changes because I avoid NiMH these days. Maybe they weren't that bad. Expect AAA, and 2/3a. Maybe they were I don't know... The other alternative is lifepo4 batteries which you can get in a size similar to 2/3a and the voltage is around 6.5v which can work. https://www.componentshop.co.uk/6-6v-1600mah-3c-lifepo4-receiver-rc-battery-long-type-vapex.html Never thought of those, thanks, Link to comment Share on other sites More sharing options...
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