Well don't they make a 3.7v (2X1S=2S) AND a 7.4v (2X2S=4S) volt version of these? I'm wondering if he has the 7.4v versions, and everyone is assuming he has the 3.7v version. But I'll bet that car will fly on 4S lol.

Eta: Ok, went and researched, apparently they do make two different voltages.
Race Formula 3.7V 7000mAh 70C
http://www.smc-racing.net/index.php?...product_id=116


GENS ACE 4800mah 2S3P 7.4V 25C Saddle Pack
http://www.hobbypartz.com/98p-25c-4800-2s3p-saddle.html

That is a 1s pack meant for 1/12 pan type cars. The other is a 3.7x 2 (wired in series) saddle for a total of 7.4 volts. Two different batteries. They are different sizes as well.

Who's to say he got the right batteries?

What ones would he get? He said he got a saddle. That is 2 1s batteries. And no, the individual cells of a saddle are different that specific 1s single batteries.

No, 1S is 3.7 volts, 2S is 7.4 volts. He said he had 7.4 volts. The pics everyone is posting are 7.4 volts. So, please explain to us, how to charge 2 2S batteries, where all the cells balance, while hooked in series? Is that even possible and get all cells balanced? OR is it like I said and he should charge each 2S battery, which he said are the voltage of his, EACH one, individually?

Even the picture you posted was of a 2S, because it states on the label minimum discharge is 6 volts. IF it was a 1S, the min discharge would say 3 volts. Now please, try to argue with those facts.

Now don''t claim that label is for both batteries lol. IF it was, it would state on the label that is BOTH batteries.

Seriously, you scare me lol. You can't argue that the voltages would tally to 14.8volts with both batteries in series, because their 2S, labelled and described on the labels, each battery. Instead you insist that the batteries described by him, and the pictures you posted are 1S batteries lol.

That's why you scare me, you would charge a 2S (2 cells per battery) battery, a pair of them actually, in series(4 cells). With no individual cell monitoring.

Ya know im really done trying to explain to you that it is a saddle. That is always two banks of cells wired in parallel, then the banks are wired in series. Each bank is only a parallel connection. Thus each bank is only a 3.7 volt total. Then this is wired in series with the other bank. Which then bumps voltage to 7.4. Its a feeakin saddle. Its always 2 banks of 3.7 volts(1cell) wired in series to give you 7.4.

The individual cells are connected in parallel in each brick/saddle. A parallel connection forces an equal voltage. Ironically a parallel board operates in exactly the same way. Many standard 2S packs are 2S2P, 4 cells, and have a similar connection. Although there are limitations of course, no way to determine the individual cell capacities, can only see the sum.


Seems unlikely, saddle packs are fairly common in racing. Roar and other rules limit the class that B44s and other similar cars run in to 2S, packs are checked for voltage at national events, the speed controls typically used won’t handle 4S voltage.

I am unable to find any Venom 4S saddle pack on their site or AMain, or any other brand. If you can provide info on such a pack, that would fit in a B44, it would be interesting.


Intriguing point. I notice a Reedy saddle pack on Amain is labeled 3.7V on each brick. Appears to have the same wiring configuration. The newer Venom saddle packs have different labels on the 2 bricks, that may be an attempt to make the labeling more clear, not sure.

spookie, why did you assume that the op had non standard "batteries" ? We all think he got the proper standard 2s saddle "packs" where it seems you are arguing that he has a 4s something or other. The other confusing factor is when the terms "pack" or "battery" are constantly switched around when people speak.
Please mod, close this thread.

Ok I can see two cells being wired in parallel in each pack making a total of 3.7 volts, but as the previous packs illustrate per pics, they show 7.4 volts. Why? Seems no one has or can answer that one.
So the next question if you don't mind, since they are parallel in each pack (2 cells per pack) , what controls how much each cell charges, IN a pack of two cells? Since they are parallel as stated, I assume each pack only has one balance lead lead, right? Or does each pack have a pair of balance lead wires, one for each cell?
I never said their was a single small 4S pack like one of these, I said two packs that state they are 7.4 each, make 4S when in series. Not sure where that quote came from.

A 2S 7.4V saddle lipo pack is made from 2 individual 1S 3.7V packs. Each 1S pack is wired in series to make 7.4V total. The reason they both say 7.4V is because they are meant to be used as a two piece battery. Thats why they are sold in pairs.

Maybe you can explain why the OP says each battery is 7.4 volts? But they are "packs"? If you want to contribute something constructive do it.

You answered that one

Eta I would like to know, what controls the amount of charge each cell gets in a single pack. You have two cells in each pack, wired in parallel, right? You charge them in series as Dave explained already. with a two cell balance lead. My question is> Whats to keep one cell in the pack of two from receiving a bigger charge than the other? Since you are only monitoring the total pack.

Two 1s's in series doubles voltage to essentilly give a 2s

Two individual 3.7V packs wired in series the way the OP explained would be 7.4V

Yep I get that, now what controls the amount of charge for each individual cell of two (wired in parallel) inside the 3.7 pack? Now if some could say a microchip, that's cool, but no one has. No one has explained why the packs say 7.4 when each is really 3.7 volts.

I'll admit lol, I'm hard to teach on some things, but no one has to state the points above. They just assume they are 3.7 volts, when the label clearly states they are 7.4's.