look what happened in the jumper forum when they changed from 2a to 3a chargers
red abut all the problems.
juper and teclast are oem products and mostly use the same hardware
be happy that yours work and let the fingers from the charger as long as it functions.
my jumper 3s takes over 4 hours to charge since it uses a much more gentle loading curve – result just 7% capacity loss in 8 months- compare that with all the jumper pros and teclasts.
the last 10% charge takes over an hour to reach 100%
fast chargers are battery killers
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1981 soldered my first Sinclair computer 1K, tapedeck * 1984 build and sold IBM clones 8Mhz, 512K, 20MB HDD * 2018 messing with ultrabooks