è vuoto
è vuotoMarco Cavaliere
Recensito in Italia il 2 febbraio 2025
Viste le precedenti recensioni ho controllato la "R1" e nel mio caso, la resistenza è (OK) da 0,3Ohm (R300). Carica un po' rapidamente ma sembra tutto ok. Da test su carico fino a 1700mA pare ok. Deve alimentare una telecamera remota con pannello solare che diventa il caricatore ma ovviamente prima c'è un piccolo MPPT tarato sui 5V di uscita(https://amzn.to/4gnXePs). Dubbio: Non può controllare la temperatura delle batterie in carica, potrebbe essere pericoloso!? Ho monitorato la temperatura e per ora restano poco più che tiepide. Devo comunque verificare su più cicli.
Massimiliano
Recensito in Italia il 12 marzo 2025
Ottimo prodotto da usare come UPS, nel mio caso per tenere alimentazione attiva sui raspberry Pi 4
Stef
Recensito nel Regno Unito il 17 settembre 2024
As others have said, you need to replace R1 with a much lower value, although shorting R1 to best also worked.3A is not correct. But it was a rock solid 4.94v all the way to 2.3A with a test load. At that point it was getting pretty spicy and I assume a cut-out … cut out.So if you’re happy replacing a single SMD (I managed with an 80w shovel of a soldering iron) and 2.3A will do you, it’s actually a pretty tidy package for such a low price 👌
Customer
Recensito nel Regno Unito il 3 giugno 2024
Thank you to the previous reviewer Peter Vasil. He was clever enough to diagnose the construction fault with R1 on circuit board being wrong value and therefore NOT charging the batteries at all! I sourced a pack of SMD resistors and replaced the 330R resistor with 1R. Should really be .3-.5R but the board now charges the attached batteries. So thank you Peter ;-) And no thanks to seller. Nor Amazon who quite honestly sell much trash nowadays. Who still mislead by attaching the same multiple reviews to multiple items or conceal the negative ones.
Peter Vasil
Recensito in Germania il 10 maggio 2024
5V output seems stable up to 500mA at least (have not tested anything heavier), both on 5V DC input and battery-only. However, it does NOT charge the battery when plugged in to 5V DC, regardless if there's anything consuming power.I've confirmed with a lab power supply - 5.2V input, no load connected to the module, 2x 2000mAh batteries discharged at 3.4V, and yet the module took absolutely no power from input and battery voltage stayed at 3.4V for 24h (when I've turned it off).It might be usable with additional small 5V lithium charger module that can be bought for UPDATE: I found out why it does not charge :-/ Resistor R1 next to TP4056 separates 5V input from TP4056's Vcc input - it should be very low resistance (Not sure how many boards they sent out having this kind of error ; maybe this detail will help someone else.
Realreviewer
Recensito in Canada il 24 gennaio 2024
Works well so far, using it to power a Pi4 only. And it seems to struggle if it needs to charge the 18650s and supply
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