HarryN
Flashlight Enthusiast
Hi, I am working on a project. (actually its a gift for my wife )
For various reasons I want to power it with AAs if possible. One of those reasons is that normally it will run on rechargeable batteries most of the time, but can also run on AA energizer Li in a pinch.
The power draw is not all that high (4 cells in series) x ~ 0.1 - 0.2 amps, but it will run more or less all day and has to be portable. There will be 2 packs inside in parallel to meet the run time goal and selected with a switch.
The plan is to recharge it every night with the batteries in the pack, so still 4S, because it requires a screwdriver to access the batteries.
Ideal battery capacity is ~ 2000 mahr or similar.
LSD cells are ok , but obviously not any benefift.
Based on the results of aacycler.com, none of the AAs that are in this ~ 2000 mah range will really last more than 3 months. That is acceptable but I wonder if there are better options out there, such as NiCd or similar?
The FDH cells that are getting extremely long cycle life are only about 1/2 of the needed capacity.
I am not all that worried about the cost per cell, but I need to be able to buy them on-line in the US.
For various reasons I want to power it with AAs if possible. One of those reasons is that normally it will run on rechargeable batteries most of the time, but can also run on AA energizer Li in a pinch.
The power draw is not all that high (4 cells in series) x ~ 0.1 - 0.2 amps, but it will run more or less all day and has to be portable. There will be 2 packs inside in parallel to meet the run time goal and selected with a switch.
The plan is to recharge it every night with the batteries in the pack, so still 4S, because it requires a screwdriver to access the batteries.
Ideal battery capacity is ~ 2000 mahr or similar.
LSD cells are ok , but obviously not any benefift.
Based on the results of aacycler.com, none of the AAs that are in this ~ 2000 mah range will really last more than 3 months. That is acceptable but I wonder if there are better options out there, such as NiCd or similar?
The FDH cells that are getting extremely long cycle life are only about 1/2 of the needed capacity.
I am not all that worried about the cost per cell, but I need to be able to buy them on-line in the US.