Sponsored by JLCPCB ($2 for 10 Boards): https://jlcpcb.com
Adeaska SQ4 Plus Battery Charger on Banggood: https://ban.ggood.vip/59q
Could the Adeaska SQ4 Plus become my every day battery charger of choice?
Adeaska SQ4 Plus Battery Charger on Banggood: https://ban.ggood.vip/59q
Could the Adeaska SQ4 Plus become my every day battery charger of choice?
What would you recommend over this for cell matching. I want to discharge/charge to detect capacity and internal resistance
Looks similar to the Xtar dragon. I wonder if these chargers are made by the same oem factory?
Like! 1) At the end of the charge (-ฮV), this device goes into trickle charge mode (maintaining
maximum charge with low current) ?????
2) Is there a discharge function? No pre-charge!
3) After the discharge, this device is on the machine, without touching it, can it independently charge after the discharge ?????
Who knows help. It seems that this is the key value for me among two (three) devices.
Hello Julian, very helpful vid. Thanks. Any idea, from which store I can get spareparts? One of the four L-shaped sliders, contacting the minus pole of the batt, is broken just in the edge. Apart from that damage, I can confirm the positive impression, you got on the first sight. Regards Heinz
Does 21700 bottom top battery fit in this chapter?
Julian, I bought my SQ4 charge almost 2 years ago but it has burn the two T4 diodes that are just under the 12 V power socket. I can see them in the video of the tear down. I think they are for reverse polarity protection. I have replaced them and they keep producing smoke. There must be something else casing this. Do you have any ideas of which other component has failed in that causes high current to these diodes. I have placed them with the negative bar facing the power socket. Can you verify in your board if this the correct orientation? I could not determine it looking at your video.
i have the same one i dont like it its fake no current make noice R I P adeaska
The internal resistance (IR) of a Lithium battery is a function of both temperature and SOC (state of charge). IR is high under 25ยฐC and above 45ยฐC. State of charge plays a major role also. Under 30% SOC IR is very important (high); optimal around 40% SOC, above 60% SOC IR rises slightly again. Since heavy load make temperature of the battery rise very high IR rises accordingly. On the other hand, a near to empty battery will always show a high IR, which will improve considerably during charging. So, charging a near to empty battery IR will look worse than it actually is.
You should try empty cells and see what the resistance shows, then when at approx 50% charged pull the battery back off the contacts for a moment and let the charger read the resistance again. Then repeat when the cells are full. I'm thinking the resistance is much greater at empty and full state of charge.
The battery internal resistance measurements is totally out. My Liitokala 500 is much more accurate.
Several times I have had batteries shoot up in temperature during charging. I want a charger that detects this and reduces the current supplied.
You should compare the Adeaska SQ4 Plus with Golisi S4
13.6V? Why don't you put a voltage regulator on those Lead Acid batteries to get 12V?
I purchased one of these chargers. The one I received had a small fan installed with hot melt glue. Must have been some heat issues with the original production run.
I have a smaller version of this which can also act as a powerbank, but I think this one has a few more features. Mine can only charge at 500 or 1000 mA I think, and no IR measurement. Still I quite like it, it was of course very cheap =)
What about LiFePo4?
It doesn't do lithium but I'd trust my Maha MH-C9000 a lot more than this! ๐