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Thank you for the review I notice the Awful UI : the loop and stop values should not be shown when in Charge Mode. The UI could show button functions right above the buttons

Hi! I have a quick question for you.....I set the voltage Hi and low and I lost the SOC display being full as my battery is fully charged. I'm wondering should it not show all segments on being full? Is there also a way to reset meter to default right out of box?

Hi, To the external blue terminals you can connect different holders that contain, per example, 21700 cells. You can obviously test from only one holder at a time, 18650 OR 21700 … 👍

This day i have one of this stuff thanks the video

Everyone repeats the same thing, without clearly understanding how the protections work and their calculation.

lol, I just got the 4 and 1 channel chargers. I saw this one and I "whoa'd". Thanks for showcasing this.

The tech notes does show a dual power supply circuit how ever the module does not properly implement it While I didn't both trace the circuit I can see the three inductors are suppose to be on a transformer core. Wish I saw this before buying two

This type of board can produce an equivalent negative voltage provided sufficent current is flowing between the ground and the negative terminal - otherwise a high voltage builds up in the negative-side capacitor. I have the same board and mine works fine when used correctly but shows large voltages when idling.

I have to replace a battery, which contains a little board with two chips on it. One is the DW01A, which brought me here, which was good because I couldn't find a datasheet for it. The other chip is the SM8205, and I can't find any information on that either. I can find suppliers and even pictures of the chip - but no datasheet. I don't suppose you have any info on that one? It has 8 legs, but legs 6 & 7 are bridged with solder. This was a very informative video, by the way - but unfortunately, it doesn't cover the chips on my battery. Maybe my 8205 does the same job as your 4056 - or maybe not. Incidentally, there are two straps from my battery to a little circuit board containing these chips, then there are three wires from the board to the minicomputer board that it powers - red, black, white. I don't know if the white one is for charge monitoring, or for temperature.

Hola. Una ayuda para ti. Los circuitos con condensadores se deben de precargar siempre para no dañar los equipos por transitorio. Con una resistencia de 500 Ohm y 1w es más que suficiente. Muchas gracias por los test y análisis.

Suppose we have a battery pack of 24V with BMS, so if we used a charger that has twice the voltage 48V, then the BMS will protect the batteries and no damage will happen according to your explanation, but the question is that: will the BMS allow the 24V battery to charge safely using the 48V charger or will the BMS get damaged? Thanks

Next version will be with nimh nicd and other Like litokala ;)

I bought those same black batteries, 8 pack, 6+ months ago from Ali-E and am getting 600-700 mah reports on my 4 channel version of the tester. Untrustworthy brand!

That barrel jack is probably heating up, having a lot of voltage drops at high currents

Very good review as always. Can someone please send him a UNI-T UT673PV panel test meter to review?

I really LOVE this channel. And I am a sucker for testers🙂 I enjoy your explanations. Thanks! What would you really recommend as the best battery for flashlights? The 18650 I mean.I have the Molicells.But you have these Liitikala from Ali? And the 4000 mAh? Are they any good?

There is one also sold for 21700 cells to

I enjoyed the video, but try not to overexplain everything. Ie: here is channel 1.. at this point we know where are the rest. But you keep going. Even after 7 channels are mentioned you still want to tell us where is channel 8. When in the menu the menu closed twice because you explain in circles too long, not sure why or what to say. At voltage stop or lvd low voltage disconnect you ended up confusing yourself and forgot to show what options it had. In any case, i still benefit from the video, i had my eye on that one for a while but are disappointed with the build. Low charging and discharging and lack of foresight by not adding 3,650v charging for lifepo which also have small cylindrical models like 18650,26650,32650 ect. Thanks again.. practice talking points next video ;)

nice review.

Hi,can i connect 100 to 150 ah 12v battery to 1200 watt boost converter?

Is there a way to change the charge voltage? Did i miss it? I have to do some cells that go to 4.35 and cut off at 3v

Thanks a lot

Very nice testing of this unit. Many thanks 👍

How to power the display without usb power?

Nice work, a couple of things. You may want to do the testing using standoffs as that pcb is obviously designed for them and airflow underneath may help that dissipation. Also it would be cool if you added a efficiency graph in the conclusion section. Keep up the great work!

Nice

Hi i want to use this to drive bldc motor i am afraid reverse current from bldc motor damage this? It itself have inbuilt protection ?

connect this to bldc motor 48 v10 ampere possible?

Is this good to use in 12volts 140watts mini rice cooker?

I have a burned out microcircuit on this device (in the lower right corner between the indicator and the tested battery, 8 legs). Could you take a look and tell me what kind of chip it is???

Hello . I was look your video is very good . But i want ask you pls i make Project charging and protection was good but booster this mt3608 still stay very hot pleas can help

Thank you so much this video helped me a lot to build my 12v Li-ion battery pack❤

Cool

Hello, great video. I don't know if you'll be able to answer this since it's a 3-year-old video by the time I put Make this comment. But I don't know if I'm doing something wrong or if my entire batch of 20pcs of ts4056 are bad. USBC version. It has the extra protection. But when I plug it in. No lights turn on. Doesn't seem to charge. I've plugged just the USBC in, I know that the plug is good and the power supply is good. But it doesn't seem to have any voltage going through the terminals connecting the USBC to the board, or from the battery output and input. Or to the component. But I have wired it up so that my battery will go to my lights. And that works fine. But it doesn't seem to charge. The lights don't turn on if I plug it into a power source via USB or to the batteries. Or from the batteries to the component. I've tested five out of the 20 that I bought. But I at least know that my battery will power the component I'm plugged into. On that note, since I can't send them back. Is it still a good idea to be using this as circuitboard that can protect my lights from the batteries messing up or anything? Or should I just unplug it and buy new ones? Which I do have new ones on the way but I now have possibly 20 of these completely useless boards.

Hello. Does this device show internal resistance correctly? Compared to normal devices such as yr1035+ or ts457

Bro As soon as i connect load (esc connected to 1000kv bldc) my 3s 40A bma output drops to 6V from 11v, y? When load is disconnected it shows 11V again normally ? I already threw one bms this is second😢 Moreover this pack worked day before yesterday i didn't touch this for a while tdy it throws this prblm😢😢😢😢😢😢

Thanks

Good job. Thank you. Its a bit misleading calling it Dual Channel. I bought this thinking it could test 2 batteries at a time. That's what Dual Channel suggests to me. But no. Just the one.

How do you change it from Chinese to English

I'm looking for a buck booster to were I can input around 12 to 14 volts up to 48 volts to 54 volts. I need about 3000 watts. I guess if worse cone to worse I could get a new power supply.

so..is it safe to install this devise in our car tq sir

Why its give 0.4 to 0.8 voltage at output terminals. Somthing goes wrong but I am not able to find please help me

Could I test a 21700 battery in a holder by connecting it to the blue +/- connecter at the top? Thanks.

it is suitable for connecting 600W @52V, TPA3255 class D amp with 12V Lead Acid battery ?

Thank you, your review is still relevant and useful. When you conclude, you say it has a very bad current setting. Does that refer to how the user sets the CC (not being able to just short-circuit and then set CC), or are there other CC shortcomings during operations? In other words, once I set CC, will it then dependably keep that CC level? I ask just to make extra sure because if I ever use this boost converter for charging, CC must obviously always work right. Thanks!

thankyou! sir you helped me out a lot! you are truly fantastic! im very greatful. owens.

Can two pieces be connected to one power source, such as 53 volts, 37 amps, and 100 volts output?

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Thanks for testing it. Shame the producer have room temp iq and locked the charging voltage. Id have bought 20 units but again.. producer..no brain. What a waste.

Would you happen to know which of the measurements are going to be affected by the resistor tolerance error?