WARNING: Soldering Lipoly Cells takes a degree of skill and experience. Do not attempt to solder your own packs if you are not confident in your soldering abilities. No Warranty is implied or given once you have soldered the cell tabs. Please check cells for warranty purposes prior to soldering.
No a question, razther an advice. This battery works very well to replace syma S006/G original battery. Just unsolder the little PCB on the original battery and solder to this one. I suggest you to chnage the connectors by JST. Rgds - Thierry
You'll realize when you read my question I don't know anything about batteries and appreciate your help.
I want to use this battery to replace the one that came in a small RC helicopter. The helicopter battery has a small circuit board inline to the connector. I would like to find out if these electronics are necessary on the replacement battery. I'll guess and say they are but I don't know what they do (maybe over/under charging protection???). The original battery is also 3.7V 1000mAh with two connectors and has DS 903048 and 111022 on it.
Again, thank you for any info. I'm prepared to solder the connector directly to this replacement battery or solder the electronics to it depending what is appropriate.
that depends on the final voltage u want to get.
If you just need 3.7 V you will have a 4p configuration, 3.7 v and 4000mah. No need to put a balancer and the installation is really easy, just take care to have a maximun difference of 0.1 volts when joining the packs, and just join the negatives and the positives together and you are done. If youre going to work in series better take a look, put: lipo 4s solding in google images
I need to charge batteries 1S 1000 mah. but my experience is not good with chargers / balancers. Would be possible to charge with a balance lead, linking two cells and only plugging in to charger balance output?. So I could use the program to charge as if they were 2s.
How i can plug the three cables of the balance lead to de four of both batteries?
If you have a balance charger(multi 4 button type/B6 or better) then all you should have to charge through the normal charge lead(same as whatever plug you need to use) as a one cell lipo, there is no need to balance just to have the correct volts in the cell when charged, also be sure not to over discharge the cell ( not under 3 volts ).
The charger will automatically stop when the cell is charged.
Hope this helps.
P.S. It's not the charging I would be worried about it's making sure you never go under 3 volts, might be worth a lipo alarm if the equipment you are using it in dose not have some kind of low voltage cut-off.
I know that it is not necessary to balance 1S, but if i built a 2S pack with wires and connections I think that it will work best in a multicharger. After being loaded Ill unplug each cell and Ill get two batteries 1c fully loaded.. *)
For good and faster soldering you must have chisel type tip for good heat transfer. Ordinary 60/40 lead solder will do since they are pre-tabbed.Apply small amounts of rosin flux during soldering to ensure firm joints...the faster the soldering the better to prevent damage to the cell.
Your right with both, it depends on how you interconnect them. In series 18V/1000mAh, in parallel (all the plus tabs together and the minus tabs together) it becomes 3.7V (max4.2)/ 5000mAh. Butttt, they are not matched at resistance! So, one cell will be empty (much) faster then the others.
great little battery, inexpensive, light and works as a charm. For me it has been easy to solder. I va joined two packs in parallel to have a 1s2p batery with 2000 mah. Attached to a portable gps it gives me almost 3 hours of use, instead of less than 1 h with its standard battery of 850 mah. Highly recomended