I wanted a cheap multicharger so I found this 1412W one on BIC, its on ebay too.
For $8.19 it is pretty cheap but it does charge mostly all kind of batteries, except for 9V Blocks.
There is a switch where you choose the voltage:
Mode 1 is for Ni-MH / NiCad batteries ————————————->1.57V*
Mode 2 is for alkaline (rechargeable ) batteries; ————————> 1.84V*
Mode 3 is for LiFePO batteries; —————————————————> 3.6V*
Mode 4 is for li-ion rechargeable batteries. ———————————> 4.18V*
(* my measurement with a multimeter)
I could not resist to open it - and took some pictures. (Be aware, the springs to hold the batteries are difficult to get back!)
Inside you see the LM339N comparator, I believe it runs the LED of when full charge has accomplished.
I believe the charger does CV = Constant Voltage charging …. with maximum of 1.8A (short circuit tested
Normally this will give a charge of 0,2-0,3A per battery depending on the battery voltage.
Keep in mind that all batteries are charged in parallel. On bad cell/short circut will surely surge the other cells! DANGEROUS!
There is no 12V input But the charger cope with 100-240V AC input. Unfortunately the power plug is US and no adapter included
>Looks like it is overpriced.
I don’t think you get any as CHEAP charge with will do all the voltages in on! But off course just NiMH/NiCa or just LiIo you get them cheaper.
>It must run all batteries in parallel, maybe with a resistor between.
NO, in parallel! Just made a test …. NiMh + LiIo = 2.8A surge!!!
HM, on the other hand - I charge a 123 and a 18650 now. The 123 has 4.19V/0A the 18650 has 4.0V charging about 0.4A?
>I also doubt very much that it will turn the current off when the batteries is full.
NOPE … It will indicate “full” when it turn of its LED. But the voltage is still on all batteries.
>Is the slot in the circuit board 4mm or more wide?
Looks rather 2mm wide to me = not safe
>Are there any safety markings on the blue capacitor?
blue capacitor? I belive its a transformator. The capacitors on left are both rated 400V the smaller ones on the right 10V
Well I have assembled it back - don’t want to open it again.
I guess it does its chargejob, but one should be careful not to insert faulty batteries with good ones!!!
Then it will BLOW OFF = DANGEROUS. =cheap smelly shitt. A NiteCore-Charges is surely safe but twice the price.
Just look at that solder job - what a “beauty” lol!
And they sell lots of these cheapo chargers that could explode any moment, yet another warning to never leave batteries charging/discharging or charger simply plugged in unattended no matter the brand and price of your equipment!
I guess it would be also dangerous to leave such charger unplugged but with batteries inserted?