Hi, I am new to this forum.
Yesterday, I bought a 220V rechargeable emergency LED tourch.
While charging the tourch using 220V from the powerpoint, I heard some popping/bubbling sound coming from the unit. I therefore opened it up.
I noticed that there are 4 black rechargeable batteries connected in parallel to the circuit board. The bubbling sound is actually coming out from each one of these batteries while they are charging! Is it normal??
I want to replace these rechargeable batteries as I am afraid that they are not working properly. However, I could not find any specifications on each of these batteries. I tried to check the combined voltage with my digital meter and it is 2.46V, when I tired to meausre the mV, I could not get anything, when I swtiched to Amp measurement, I come up as 14A, and then the wires overheat and smoke came out! I stopped immediately and everything seem fine.
Are there anyway to check the specification of these batteries without seeing any labelling on their surface? Is the bubbling sound/fine clicking/ popping sound while charging normal??
Please see the attached photo for details.
Thanks in advance.
Yesterday, I bought a 220V rechargeable emergency LED tourch.
While charging the tourch using 220V from the powerpoint, I heard some popping/bubbling sound coming from the unit. I therefore opened it up.
I noticed that there are 4 black rechargeable batteries connected in parallel to the circuit board. The bubbling sound is actually coming out from each one of these batteries while they are charging! Is it normal??
I want to replace these rechargeable batteries as I am afraid that they are not working properly. However, I could not find any specifications on each of these batteries. I tried to check the combined voltage with my digital meter and it is 2.46V, when I tired to meausre the mV, I could not get anything, when I swtiched to Amp measurement, I come up as 14A, and then the wires overheat and smoke came out! I stopped immediately and everything seem fine.
Are there anyway to check the specification of these batteries without seeing any labelling on their surface? Is the bubbling sound/fine clicking/ popping sound while charging normal??
Please see the attached photo for details.
Thanks in advance.
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