40-45C, which means after some time, it does start to hurt if you touch them.
If they’re only hot for a short period of time, it should not be a problem.
+1 on this Vapcell S4 Plus charger (I’d think that Vapcell will be glad to send you one for testing since they’ve been sending you their batteries to test…), which looks like it has some promising specs:
- 4x 3A charging (similar to Miboxer C4-12 or SkyRC MC3000)
- discharge test at 1A (2 slots) or 0.5A (4 slots?)
=> this seems interesting since very few chargers can discharge at 1A
(SkyRC MC3000 of course can discharge 4x 1A or 1x 2A), but other chargers that discharge at 1A may be discontinued (eg. Miboxer C2-4000); and the Opus BT-C3100 can also discharge at 1A but have a problem of heating up and “pausing” the discharging, which results in incorrect/too high capacity readout.
- internal resistance (would like to know how precise it is); we understand that most chargers might not be too accurate in DC IR test, but a ‘relatively consistent’ IR reading result would be good enough for most people.
In my opinion, the role of apple is to create half-wit products for half-wit people who seemingly at will pay (too much) for them. A great piece of their very high profit margins get invested in preserving their abusive ways (intellectual property protection, devices often problematic to repair by 3rd parties, etc.), giving their products the exact amount of extra quality for half-wit people to continue thinking they are the best. In my opinion they're very far from this goal, though, and as Lightbringer likes to say what they really deserve is to be dragged into an alley and beaten with sticks. Yes, I am biased. My money has no place in their pockets. Good luck to them.