ST16S Battery pack connector?

[Sheepdog]

Any one know the connection type in ST16S controller? I have a few flight packs but only 1 controller pack which goes to about 48% while 1 flight pack goes low so difficult to get more flight time as controller would go to low before 2nd flight pack. I have opened the pack up and looked at the cells used, they are readily available at about £10 a piece, I want to build more controller packs but need a connector, or I would have to use some connector pins to plug in separately. The outer pins are the +/- so a short fly lead to just plug the pins in. Strong Velcro to secure pack in the controller. Tried looking online and cannot find a new pack, looked years ago new pack was over a £100. So to build a pack now would cost me a bit over £30, cells plus connector. But I cannot find the type of connector.

 

[Sheepdog]

As no replies to this looked into it further. There is a small pcb in the pack. The two power leads go to the pcb, other connections do not seem to be used. 3 chips on the board, cannot find exact data, they seem to be mosfets or power controllers, plus some resistors and caps, surface mount. Probably indicating the pack has inbuilt charging circuit. I intend to get same cells as used, spot weld them in parallel as this is the configuration, then put a couple of connectors to be able to change the cell pack, within the unit. After disassembling the pack, it just clips back together. Found supplier charging £6-8 per cell so cost would be 3 times that, plus spot welding strip. The cost difference is for capacity, higher cost higher capacity. I would also be able to charge the pack outside of the controller which would be a lot quicker.

 

[Steve Carr]

I have not disassembled the ST16s battery but I have done so with the ST16. The ST16 uses an EC2 connector and three 18650 batteries in parallel. I presume the ST16s is the same but with the blade connector.
Whatever method you use to replace the 18650 batteries will probably work just fine.

 

[Sheepdog]

From what I have seen, the only difference in the packs is the connector. ST16S has it built in,
what I have seen for ST16 has a fly lead. May or may not have same circuitry inside the pack.
If you look inside a flight pack, lots of circuit, some will be for balance with the supplied balance charger. Just makes it more difficult to duplicate the pack. More profit.

 

[cabinfourus]

I know I am coming late to this thread, but does anyone have the wiring pinout for this battery? I have three st16s controllers I need batteries for, but everyone wants way too much for them.
From what I can see, it looks like, and sounds like, the battery has a charge protection and discharge board inside it. This would be a simple hack, since the board just protects your battery from overcharging and rapid discharging.
Can someone with more knowledge share their input?

Thanks

 

[h-elsner]

I have a 16S for test purposes. Because it came without battery I have used a battery from ST10 (which I got very cheap). This works so far, battery can be charged via ST16S. Runtime is of course poor.

I think the batteries from ST16 are working too, but do not fit the battery case.

 

[cabinfourus]

I have a 16S for test purposes. Because it came without battery I have used a battery from ST10 (which I got very cheap). This works so far, battery can be charged via ST16S. Runtime is of course poor.
View attachment 31910View attachment 31911
I think the batteries from ST16 are working too, but do not fit the battery case.

AWESOME!! Just what I needed. Thanks