For Aussie users of Convoy S2+

Batteries and Chargers Rechargeable Batteries
1

The Convoy S2+ is known for a being a little bit tight for some obese protected 18650s, including some protected Panasonic/Sanyo NCR18650GA cells. I was thus a bit concerned that my existing Blazar 3500mAh protected cells (18.65mm diameter) from Aussie retailer supersports600 might have trouble fitting. Thankfully, this isn’t an issue, with what is claimed to be the world’s best performing protected GA cell fitting with a some wiggle room to spare.


For the benefit of the other Aussies here, I though I’d let you know.

2

Thanks !

3

I think it only matters which spring they use on the driver and tail cap. I have two S2+’s from the same place obviously using different springs on the driver. The only difference between the two is, green one is a 4*7135, and the grey is an 8*7135. They use the shorter heavier springs for the higher current driver.

These cells are button-top NCR18650GA with Seiko pcb w/AO mosfets for 12 to 13A current cutoff. 69.5mm long.

4

Thansk sk.

5

Thanks for posting that. I wasn’t aware of the differences in springs. This one is a 6*7135, though I have three 8*7135 in the mail. Most reports I’ve seen of cells not fitting in the S2+ are related to width, and seem to be double wrapped obese 3500mAh protected cells. The Blazar is single wrapped, and I think the newer Keeppowers are also now single wrapped.

6

Looking at Simon’s Convoy site, he has pictures of the drivers. Looks like both the 6* and the 8* have the shorter stiffer springs. I may change to the short spring on that green S2+

7

Sadly, I’ll have retract my original statement. Of the 4 Convoy S2+ that I recently received (1x grey 6*7135, 3x black 8*7135) the above mentioned protected Sanyo GAs (18.65mm diameter) fitted easily in 3 out of the 4 tubes. One of the black tubes was way too tight.

Thus I think that:

  1. Convoy need a bit more consistency with the boring of S2+ tubes - single wrapped protected GA cells should be able to fit.
  2. In the mean time, using protected Sanyo GAs in S2+s have a risk of not fitting.

Luckily I have a protected Sanyo B cell hanging around for the narrow tube, and I’ll probably be ordering a batch of unprotected GAs soon anyway.