CHV1410L vacuum cleaner charger current ratings

Question

Black and Decker Dustbuster CHV1410

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Rishab S @rishabs

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CHV1410L vacuum cleaner charger current ratings

Hi,

I have a CHV1410L vacuum cleaner with it's S010QU2300040 charger. The charger is DC 23V and 400mA current rating. But, if I charge the vacuum cleaner from my DC power supply and set it to 23V, it draws close to 2A (2000mA). Reducing voltage reduces current too.

Questions:

I was expecting it to draw <= 400ma current even with DC power supply. Why is it drawing more current ?
Is it safe to charge CHV1410L from DC power supply as explained above?

Cheers!

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score 2 · Answer 1 · 2025-11-01T18:33:33-07:00

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oldturkey03 @oldturkey03

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crwdns2931729:0crwdne2931729:0: yesterdayHuk 1, 2025

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@rishabs your battery uses some 3.6V 18650 Li-ion cells. Those are at minimum 2000mAh cells and there are commonly 4 (some have 5) cells. Those are wired in a series -parallel configuration to obtain the required voltage and amperage. It is the battery controller for those cells, that allows to pull the amperage from your charger. It is not your charger that makes the difference but the battery controller. Now, if your battery does not turn hot when charging, your cells can take the higher amperage. What you will notice is, that it will charge considerably faster than with the original 400mAh charger. Just monitor the temp of the battery to see what happens.

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Thanks for the explanation!

Yes, it uses 4 18650 Li-on cells (in 4 of 5 slots in battery pack - 1 empty slot) with 16V max and nominal voltage of 14.4V (3.6V * 4), as they're connected in series. The part I'm not sure from above answer is how can the battery controller (BMS), draw different amps from different DC sources with the same voltage. It's not like a type-C USB cable with a e-marker / data interface to negotiate voltage / current with the wall charger / DC power supply. It's just plain DC with 2 cables (red for +, black for -) in the wall charger.

PS: I don't have access to the charger, so I cannot do measurements. I have only DC power supply to charge the vacuum cleaner.

crwdns2934271:0tiawara ta 1 agoHuk 2, 2025crwdnd2934271:0 Rishab S crwdne2934271:0

@rishabs it does not allow different amperage it just allows the full charge to the batteries. It is not limited to anything below the current 2A that it is drawing from your power supply. If you would use an adapter that delivers 1A then it would let the battery charge at that amperage :-) Like I mentioned, for as long as your batteries do not heat up, there will be no issues.

crwdns2934271:0tiawara ta 1 agoHuk 2, 2025crwdnd2934271:0 oldturkey03 crwdne2934271:0

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