ZIPPY 850mAh 20C single cell

 lou3435 5 points

Yes they can. Just be careful not to overheat the terminals - ie do it as quickly as you can consistent with a good joint.

 Pavel 1 points

Yes. But we must be careful when soldering. Since soft contacts, I advise you to accurately capture the first battery contact at the base of the pliers, put him on the solder, and then carefully solder a wire to it. This is necessary in order to prevent heating of the battery itself.

 squidyman 61 points

I happen to have the same battery. When I soldered it First I folded over the tab so that its strength is doubled then slip the wire and some solder in between the two tabs.

 lou3435 5 points

Length = 48.9mm, width = 30.3mm, thickness = 6.93mm. Don't forget the tabs stick out a further 9.5mm but they are flexible and can be folded back over the cell.

 squidyman 61 points

the tabs are 3/4mm thick so remember to add that to it. plus any wire you plan to solder to it.

 dj-mf 31 points

This is single sell. For change bad in existing battery or make new. No connectors included.

 squidyman 61 points

No connectors included. Does include some shrink wrap to cover them though

 Jujake 93 points

This is a 3,7V battery! Lipo batteries have a nominal voltage of 3,7V. Since this is a single battery it's voltage is 3,7V

 flaviohpo 22 points

If you put in series the lowest current will be the maximum current, if you put in parallel, the sum of the current will be the maximum current. I suggest you to buy an 3S 850mAh assenbled pack instead of building one. But if you realy want, first you need to have exactaly the same voltage in the batteries, also the same mAh, then you will put they in series and you will have a 3S 850mAh 20C.

 SLOW STIK 53 points

if you connect batts in series you increase the voltage and the capacity will stay the same. ( two 11.1, 2200 mAh packs in series would yield 22.2 v, 2200 mAh) If you connect batts in parallel you keep same voltage and increase the capacity. (two 7.4v, 2200 mAh in parallel would yield 7.4v, 4400 mAh) voltage adds but the amps remain the same when in series. In parallel, the voltage remains and the amp add up...

 say chian 23 points

It's best not to connect to the ESC cause if you do, how are you going to charge this battery? It's best for you to "create" your own battery for example adding a few of this 850mah to create hight mah battery for your own use.

 Jujake 93 points

The battery should have two pieces of foil sticking out. One is plus one is minus. If it aynt written which is which then test it with a diod or LED etc. You can solder a piece of wire with connectors onto these foils and woila - connection

 T6Texanaus 301 points

40 mm at least as you have to allow for the thickness of the cell and don't over shrink it as you can damage the cell. The idea is to encase the cell and tabs and not crush it. :)

 T6Texanaus 301 points

A single cell is not 7.4V but 3.7V so you will need them in series to "add" the voltage to get 7.4V. If you want 7.4V and 1700mAh 20C then you require 4 cells as 2 pair of 2 cells in in series. For info there is a good video that posp up on the HC Home page or google FlightTest on youtube and look for the series parallel video.

 nully 1 points

Its generally not a good idea to put lipo's in parallel or series, as they can become unbalanced, leading to bad things (fire) Best idea is just to by a battery for the Job, get something pre assembled as that way the cells shouldn't get unbalanced as the manufacturing process closely matchs the cells (internal resistance and so on)

 T6Texanaus 301 points

True Simon but I guess I should have mentioned putting in a balance connector to "help" with the mentioned problem but then how is this any different to using multiple packs in series or parallel other than at charge time. Some of the packs I have bought have cells that balance far differently on each charge.

 ugo 15 points

it's possible to build a pack : assembly in serie your batteries and assembly balancing wires .
For a 2S pack : assembly the first wire on the off the first batterie , the second on the - off first batterie and the off the second and the third off the - off the second batterie .
But it's better to take a real pack .

 sirfred 24 points

what do YOU MEEN (the first wire ON THE OFF THE first batterie and the second ON THE - OFF first batterie) I DO NOT UNDERSTAND WHAT YOU ARE SAYING

 daniel 1 points

It depends on what type of pack you would like to build. I would suggest searching google for "build custom battery pack for " This should at least return some useful forum posts.

 michaelhay 48 points

Yes, what type of connectors are the leads??
Thanks

 Beaufighter 1808 points

3.7V, as they are single cell (7.4V 2S, 11.1V 3S 14.8V 4S etc)

 simon92 28 points

hello. the
ZIPPY 850mAh 20C single cell
come balance?

 daniel 1 points

LiPo batteries are 3.7v per cell. Since this is a single cell battery, its voltage is 3.7v.