The "built in" lithium battery pack for my handheld scope (model fn1rs1 5012h) appears to be not charging. It has only been charged a couple of times over the past two years because it only gets used sparingly. It uses a usb cord to charge. The battery measures about 2.4v even after an all night charge attempt. A usb charge "monitor dongle" shows only about 7-8ma going thru the usb.
If I unplug the battery connector, the output voltage on the board is around 4v so it appears that it is attempting to do something but that perhaps the battery has a cell problem. There is no writing on the pack (I have removed the blue down to the "silver cell cover" even though the picture shows the blue cover therein). My question is: does anyone know what that pack might be? the manual just indicates 3000mah capacity.
With the battery unplugged, the unit does function powered from the ubs cord. As soon as I plug the pack in, the unit shuts down.
I guess it could also be the charge controller chip tp4056 1925.
Any guidance on this would help me get this thing back up to full operation would be much appreciated. Thanks
If I unplug the battery connector, the output voltage on the board is around 4v so it appears that it is attempting to do something but that perhaps the battery has a cell problem. There is no writing on the pack (I have removed the blue down to the "silver cell cover" even though the picture shows the blue cover therein). My question is: does anyone know what that pack might be? the manual just indicates 3000mah capacity.
With the battery unplugged, the unit does function powered from the ubs cord. As soon as I plug the pack in, the unit shuts down.
I guess it could also be the charge controller chip tp4056 1925.
Any guidance on this would help me get this thing back up to full operation would be much appreciated. Thanks
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