Recent content by Felim_Doyle
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Li-Ion battery from cell phone, why 3 or 4 terminals?
Ta-da! Now it all makes sense (apart from the quirky BML-3). Thanks, HiVoltage480.- Felim_Doyle
- Post #17
- Forum: Flashlight Electronics - Batteries Included
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Li-Ion battery from cell phone, why 3 or 4 terminals?
Here's a quirky battery, the BML-3 for the Nokia 3210. It's a 2.4V 1100mAh NiMH unit with a third ‘springy’ terminal on the side. In use, this third terminal makes contact with the chassis of the phone and so does not appear to have anything to do with a thermistor circuit. Does anyone know what...- Felim_Doyle
- Post #15
- Forum: Flashlight Electronics - Batteries Included
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Li-Ion battery from cell phone, why 3 or 4 terminals?
Well the B600BE is a 2600mAh battery and it took just over four hours to charge. I'm waiting for my other B600BE to run down before I swap them over but, as expected, it seems that the second and fourth terminals on the pack are not required for charging. Assuming, as with most batteries, one is...- Felim_Doyle
- Post #14
- Forum: Flashlight Electronics - Batteries Included
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Li-Ion battery from cell phone, why 3 or 4 terminals?
So, if I want to charge a spare battery outside of the phone, do I need to know what the third and, in the case of the B600BE, fourth terminals are for? I think that we have established that in most quality batteries, there is a thermistor connected between the third, unmarked terminal and the...- Felim_Doyle
- Post #13
- Forum: Flashlight Electronics - Batteries Included
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Li-Ion battery from cell phone, why 3 or 4 terminals?
Moving to the present, my Samsung Galaxy Ace has a three contact battery (EB494358VU) ... ... but my Samsung Galaxy S4 has a four contact battery (B600BE) ... ... although I couldn't find an image showing the contacts. :o On the B600BE the contacts are marked +U-U where U represents...- Felim_Doyle
- Post #12
- Forum: Flashlight Electronics - Batteries Included
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Li-Ion battery from cell phone, why 3 or 4 terminals?
It's an old thread but still very relevant so “wakey wakey”! I've often wondered about that curious split contact on some older Nokia battery packs. Indeed I have a BLS-2N in my hand right now and it has two such contacts. The same is also true of some later Nokia slab type batteries such as...- Felim_Doyle
- Post #11
- Forum: Flashlight Electronics - Batteries Included
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