I don't have this flashlight or either battery magazine but based on your tests and your statements, my understanding is:
1- Original primary battery holder is 4S/3P and nominally 12 volt, 4500mAh
2- Original rechargeable pack is (most likely) 2S/3P 16650 Lithium Cobalt or tiny chance of 2S/6P 16340.
3- Both #1 and #2 above wired differently and flashlight work and act differently using each battery magazine.
4- Flashlight input voltage range is about 6~14 volt and very high current at turbo mode.
5- Total length of each magazine is about 156mm with diameter of 36.6mm
Am I correct? If so, it is possible to make following types of battery holders:
A- 2 serial IMR 26650 (I don't think protected cells will work)
B- 2S/2P 18650 (8.4 volt, 6800mAh) assuming each cell is 3400mAh
C- 2S/3P 16650 (8.4 volt, 7500mAh) assuming each cell is 2500mAh
D- 3S/2P 16650 (12.6 volt, 5000mAh) assuming each cell is 2500mAh
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A will be easier to make.
B will look similar to this but longer and connected 2S/2P
C will be similar to this picture.
D will look similar to this but longer and connected 3S,2P. This will cost too high and not worth to go with.
What do you guys think?
Edit: Sorry, I missed post #94
My estimate for battery magazine length was about 1mm off but I still don't know battery chemistry, size and configuration.
Why they claim original rechargeable battery for 7.5 volt and not 8.4 or 7.4? Why total capacity is so low for that bulky size pack?
1- Original primary battery holder is 4S/3P and nominally 12 volt, 4500mAh
2- Original rechargeable pack is (most likely) 2S/3P 16650 Lithium Cobalt or tiny chance of 2S/6P 16340.
3- Both #1 and #2 above wired differently and flashlight work and act differently using each battery magazine.
4- Flashlight input voltage range is about 6~14 volt and very high current at turbo mode.
5- Total length of each magazine is about 156mm with diameter of 36.6mm
Am I correct? If so, it is possible to make following types of battery holders:
A- 2 serial IMR 26650 (I don't think protected cells will work)
B- 2S/2P 18650 (8.4 volt, 6800mAh) assuming each cell is 3400mAh
C- 2S/3P 16650 (8.4 volt, 7500mAh) assuming each cell is 2500mAh
D- 3S/2P 16650 (12.6 volt, 5000mAh) assuming each cell is 2500mAh
------------
A will be easier to make.
B will look similar to this but longer and connected 2S/2P
C will be similar to this picture.
D will look similar to this but longer and connected 3S,2P. This will cost too high and not worth to go with.
What do you guys think?
I don't know what chemistry is used for the battery. The specifications on the label state 7.5V, 2800mAh, and 21Wh.
The battery pack itself measures about 36.6 mm in diameter and is 157 mm long.
Edit: Sorry, I missed post #94
My estimate for battery magazine length was about 1mm off but I still don't know battery chemistry, size and configuration.
Why they claim original rechargeable battery for 7.5 volt and not 8.4 or 7.4? Why total capacity is so low for that bulky size pack?
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