Your cart is empty.
Your cart is empty. Double / single 8.4V / 4.2V lithium battery charging
Programmable charging current, 0.1A - 2A
Programmable pre-charge current, 10% - 100%
Wide operating voltage, up to 18V
Red and green LED charging status indication
Chip temperature protection, over current protection, under voltage protection, battery temperature protection, battery reverse shutdown, short circuit protection
Switching frequency 400KHz, available inductor 20uH and above
PWR_ON - Power supply, battery supply switching control less than 1% of the charging voltage control accuracy
Trickle, constant current, constant voltage three-stage charging to protect the battery
Static input power supply voltage (VIN) : 20V
BAT: -8.4V ~ 20V
BAT short-circuit duration: continuous
Maximum junction temperature：120℃
Operating ambient temperature range：-40℃~85℃
Storage temperature range：-65℃~125℃
Pin temperature (soldering time 10 seconds): 260℃
Applications:
Portable devices, various chargers, MP4, MP5 players, tablet PCs, model airplanes, power tools, walkie-talkies
Package include:
6 x TP5100 module
CapnBob
2025-08-14 13:17:32
On receiving these, I Immediately tested them with 12V input.3 were DOA; one followed within 30 seconds. I've had the same issue with many of these chinese BOGM(Buy one get many) deals before (which I expect), but never to this degree.By any standard, a 66% failure rate is ludicrous.It's getting to where it's BOGMKOO2 (Buy one get many, keep one or two).
MV
2025-08-03 14:24:33
The media could not be loaded.
John A. Justin
2024-11-30 21:28:13
In charging a single 18650 battery from 3.6V, which is considered to be 30% charged, the charge rate ranged between 0.9 amp to 1.2 amp for all 6 modules tested. I was able to get about 1.5 amp charge rate when a cell was at 2.6V (considered 0.0% charged). I was not able to get a 2.0 amp charge rate on any of the modules.The charge rate decreased as the battery reaches full charge ranging between .0.7amp to 0.4amps above 3.8V. At 4.2V, the current was 0.05amps.Reversing the voltages on the input and output on one module (by mistake) caused some smoke. After powering back up, the module charged at the same rate as previously and showed no signs of damage. Of course, it could have affected the long-term life of the module.According to the spec, there should be 0.1V across the two parallel 0.1 ohm current sense resistors giving a 2amp charge rate (0.1V/0.05). I only measured about 0.07V when the current was 1.4amps. I was also able to lower the charge rate to 0.28amp by removing the 2 parallel SMD resistors and replacing them with 0.25 ohms (0.07/0.25). See attached image.I may have gotten a bad batch, but there is a newer version of the TP5100 available that may have solved the low current problem (Search for Vaico T5100 video for details). Otherwise, the modules work but at a much lower charge rate than 2.0amps.
Recommended Products
$12.22
$ 5 .99 $5.99
$838.00
$ 99 .00 $99.00