Test/Review of Charger 1.5A 3.6-4.2V (TP5000)

Hello!

TP5000 @ aliexpress

Cheers ^:)

No: “Discharge with 2uA when not connected to power.”

Could you use this without the LED? If using Solar power wouldn’t the LED take power away from the charger?
Bill

The led do not use much power, but you could leave it out.

In retrospect, seems you complained from a too high of a LiFePO4 charging restart voltage, HKJ.

From what I've observed among some different cell reviews, the actual LiFePO4 resting voltage seems to lie ≈3.4V.

Mmm, digressing a bit off the topic, I was wondering if I could (snugly) fit 3×10440 cells inside a PP3 battery case…

Cheers fellows ^:)

In parallel setup?

Of course in series, DoubleA.

But you can’t charge those cells in series with that module.

Yes, I can't charge 3S 10440 LiFePO4 cells with these modules, DoubleA; I never said I was going to do such a thing ;-) (off-topic).

Cheers

Oops, my bad. I thought you were trying to charge multiple cells. :smiley:

Hi,
I am new!
I have bought two Sanyo NCR20700B batteries.
I would like to charge the batteries by using TP5000.
What you think, is this module suitable for the battery?
If not could you suggest something else?

Thanks!

It would be great charging at 1A.

Would work quite well with an appropriate 20700 cell holder, and charge in around 4-5 hours, which would be perfect for the cell.

If you can do with 5V of input, TP4056 modules are small, low profile, good and cheap. They were tested by HKJ to charge at 0.85A, can work in parallel from the same input supply (input and output grounds are common), are sold in a variety of charging boards with miniUSB or microUSB input and even basic DW01A + 8205A protection circuitry… and are this cheap: https://www.aliexpress.com/item/Free-Shipping-5Pcs-TP4056-Micro-USB-5V-1A-18650-Lithium-Battery-Charger-Board-With-Led-Indicator/32804303644.html

Another alternative is a proper CC/CV module, I have many XL4015 units and they work very nicely for a variety of purposes (fully customizable current and voltage output). Example: https://www.aliexpress.com/item/5A-DC-To-DC-CC-CV-Lithium-Battery-Step-Down-Module-Charging-Board-LED-Power-Converter/32799532951.html

Cheers :-)

great, thank you I will try it out… :+1:

Regarding XL4015, is there any indicator to see whether the battery is fully charged?

supersonic, in the above picture two leds can be seen at the lower right board corner; out of these two the one at the left (closest to the LM358) is on when in CC mode, while the rightmost one lights up (and the left one turns off) once the output current has tapered off below 10% of the set ratio at the right (CC) trimpot.

Alternative unit with slightly different PCB and colored leds:

https://www.ebay.com/itm/1-2-5-10Pcs-Lithium-Charger-5A-CV-Buck-Step-Down-Power-Supply-Module-LED-Driver/191993567480

These boards won't work in constant current mode with less than ≈7V of input, bear this in mind though.

Cheers ^:)

Originally posted on Thu, 05/17/2018 - 01:23; edited to add extra clarification info.

Wait, is that why when I tried to charge super capacitors with a 5V power supply, the current kept going up until the power supply shut off, and not doing it with a laptop power supply?

Now I get it. I have 5 of them regular buck converters, and 5 of them which have MPPT operation.

These work very well at parallel charging, and safe low voltage recovery voltage at <2V lithium ion cells at 50-100mA.

:frowning:
I don’t think you should do that. I’ve seen elsewhere that these modules need isolation if powered from the same supply.

Anyways has anyone tried them TP5100 heard they can charge both single and 2S

Well, others like pilotdog68 have done it successfully besides me:

The above is a custom powerbank I made for a close friend. It has a good old PCB featuring a single TP4056 charging chip onboard which can be seen just under the red cable in the photo, besides the onboard 5mm led. As can be seen in the photo I boosted its charging capability with an additional TP4056 board, and that thing is still operating. The powerbank is now housed inside a different transparency box because he once crashed it hard. :-D

Cheers :-)

Are you sure these modules will work fine without any issues if you wire them to a common power supply without any isolation? If so then I would like to do that setup with 2 TP5000 modules (the other type, the red one which HKJ reviewed) in parallel to charge 2 LiFePO4 cells simultaneously.