NiMh / Lipo Battery Question

[hghost]

I know this is the SC forum and this question is about batteries
and not ones that the SC uses

I have some 8.4V 3000 NiMh batteries ( they have a 4.0 banana connector )

My question is what is a Lipo equivalent to that battery or is there one ?

[flydiver]

2S around the same capacity. You can likely get larger capacity for a similar size and weight. The package dimensions are likely to be different if that is important.
This could also possibly be an application for lithium ion (18650 'can') batteries. They are the same voltage, about the size of a fat AA, and a bit more robust than Lipo.
If you go there it's a whole new world to learn though.

Note-When the Cub was still NiMh a not uncommon mod was a 2S lipo. Ignoring battery box mods it was a simple 'drop in'. You didn't have to change anything but connectors, but you did have to watch LVC.
It was still more common to go 3S and down prop > more power, longer flights.

[hghost]

I sort of figured it was 2S.....

Needed to be sure

Lipo's weigh far less than these NiMh ones for sure, weight is really not an issue much with this application

Just did not want to assume without asking to be sure.

Seems after researching further, the 2S 4200-5000 mAh batteries will do excellent, More Power,-longer run time as well.

After still getting use to Lipo's, I do not think i want to try and learn more with lithium ion batteries,
my limited capacity mind can barely keep up as it is....lol

Thanks again Fly.

[flydiver]

Mostly the li-on realm is one of figuring out differences in output and QUALITY (brand names). There's a VERY common brand called Ultrafire that is often packaged with cheap LED lights and similar cheap Chinese battery powered products. That battery and most of the Ultrafire chargers are just crap, to the point of being somewhat dangerous. Of course they go into the hands of the ignorant and unaware.

Yes, there is a lot to learn in that arena too.

[hghost]

Seems in this application, ( Off Road Buggies), a hardcase is a must have

Could not imagine a possible battery puncture and the ensuing fire afterwards....would be bad

Something my daughter enjoys doing. Can't get her to fly these planes but she enjoys the off road driving

These NiMh batteries are getting harder to find ( always no stock it seems)

the ones i have still work, they have lost a few minutes, but still produce pretty good

wanted to try the Lipo's ( Buggies have a Brushless motor and ESC set up ) so i know they will work
just was not 100% sure if it was 2S that was equal

I have read some about the lithium-ion. I know some of the battery ran Power tools run on lithium -ion batteries
Some appear to do better than others. Know very little about RC applications for them.

Way to many "Cheap/Dangerous " batteries flooding the market.
High claims and promotion ,But with poor results, after folks spend the money to get them.
Normally many learn the hard way, after it's to late.

i know i have done that myself a few times.

[flydiver]

In general the Li-on batteries kind of mirror the lipo market, but with a steel can. There are good ones.....and bad ones.
Some have a high C-rating, some low C, and of course, there's lots of lying about both C-rating and capacity. That's the part that takes awhile to sort out.
If you stay with Panasonic, Samsung, Sony, and LG you probably will do OK.

Then you need a good charger for them.....

BTW-they do make hard case lipos for cars. HK carries them.

[hghost]

Thanks Fly

yelp , HK has some hardcase batts fairly cheap

Ordered a couple to try out

Thanks for all the imput

weather has grounded everything...so it is just watching and waiting anyway.