Bought this chinese 12V 2A car/motorcycle battery charger/maintainer $7. It looked OK hardware wise in pics.
But... everything runs quite hot at 2A - IC, transformer, capacitors, output rectifier. Estimate over 85°C.
The primary cap is tiny 15uF 400V, output 470uF 25V. I would say the ripple currents are too high. So I'm not sure if I will use this charger, it's not going to last.
What do you guys think?
The way it works: if load is over 600mA (bulk charge) it's 14.4V setpoint and 13.8V if less (float charge). The YX008 IC hard to understand, it's a "coin timer" IC but I did not see any timing action.
"Note: Charging motorcycle under 20A, after 3 hours must cut off." I have no idea what that means.
There is no inrush NTC. Other versions of it add a charge bar graph or voltmeter or have 10uF primary cap or use a TO-220 IC on heatsink instead of CR8642S. It seems to be made by the same company that makes the IC's Guangzhou Yuexin Electronic Technology Co. Ltd. YX1202X6918
But... everything runs quite hot at 2A - IC, transformer, capacitors, output rectifier. Estimate over 85°C.
The primary cap is tiny 15uF 400V, output 470uF 25V. I would say the ripple currents are too high. So I'm not sure if I will use this charger, it's not going to last.
What do you guys think?
The way it works: if load is over 600mA (bulk charge) it's 14.4V setpoint and 13.8V if less (float charge). The YX008 IC hard to understand, it's a "coin timer" IC but I did not see any timing action.
"Note: Charging motorcycle under 20A, after 3 hours must cut off." I have no idea what that means.
There is no inrush NTC. Other versions of it add a charge bar graph or voltmeter or have 10uF primary cap or use a TO-220 IC on heatsink instead of CR8642S. It seems to be made by the same company that makes the IC's Guangzhou Yuexin Electronic Technology Co. Ltd. YX1202X6918
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