imuto 1.5V AA Rechargeable Lithium Batteries 8-Pack with Charger, 3600mWh High Capacity Batteries for Blink Camera VR Headset Xbox

I have a trail camera that uses eight AA alkaline batteries and gets through them at an alarming rate. I can’t use rechargeable NiMH cells as their 1.2V is too low to operate the camera - depleted alkalines still measure 1.4V when they are rejected by the camera. To the rescue, this set of 8 rechargeable AA lithium cells in their own bespoke charger.The lithium cells have several potential advantages in addition to them being reusable hundreds of times. Most significant is the stability of the voltage which should remain at 1.5V until the cells are fully discharged. They don’t follow the discharge curve of alkaline cells where the voltage gradually diminishes - hence my camera rejecting them at the 1.4V point where there is still power left in them. In some applications constant voltage ending in a cliff edge is a disadvantage. It’s sometimes nice to know the battery is running out so you can conserve power. The manufacturer of these cells has an alternative product (available on Amazon) that actually follows the alkaline discharge curve for uses that benefit from the advanced warning it gives. The electronics in the cells has a lot of control over the terminal voltage which is derived from the much higher 3.7V from the lithium cell, enabling them to tailor it to fit whatever is needed.Another factor are the dimensions of the cells. Many Ni-MH rechargables are fatter than alkalines and my camera has tight tubes into which the cells fit. These lithium cells are the same as Amazon Essentials alkaline and slide in without sticking. Another parameter that might be of interest to some uses is the light weight of lithium cells, for a given capacity, compared to other chemistries.Regarding capacity; I carried out a discharge test to find out what it was. Before doing so I fully charged the cells in their bespoke charger. From new they all needed a top up and the charger appeared to work perfectly. All eight green LEDs flashed as the cells were charging and all eight went solid green to show the charging had successfully finished.I connected one of the cells to a discharge tester and drew a current of 500mA from it. The cell shut down after delivering 3.032Ah which, at 1.5V is 4548 mWh. This is well above the 3600mWh printed on the label and is exceptional - it might improve with a few charge/discharge cycles.The cells are now in my trail camera. If they perform well over the next few months my five star rating will be justified - if they don’t I will be back to update this review.

useful thing , value for money , not a cheap crap

These Imuto 3600mWh Li-ion batterys, definitely higher in voltage at 1.5v to the NIMH type 1.2v, so a plus. but these don't last as long as a standard quality Alkaline AA.Running a bottle led lamp cluster, night light for overnight use these will be bright, and last about 10 hours, over night. Whereas a quality Varta AA Alkaline battery will last three days plus, dimming towards the end.At this offer of charger and batteries, this purchase was good, but Id have to think harder if I purchased these type of battery again.

The capacity of these is very good. Last a long time even in my internet radio which is power hungry. Charger is neat giving indication of each cell charging state and doubles up as a storage box.

This is a neat product. It look different from other battery chargers so you can remember to only use lithium batteries in this charger. Lithium is a more stable charge than other battery types so are worth the extra cost for them. The charger does tell you if the wrong battery type is loaded. It also tells you when they are charging or are fully charged. It uses USB-C for connecting to the mains electric, which is now standard. You can charge one or up to 8 batteries at the same time. I do recommend that you clearly label both your lithium batteries and the charger as Lithium only because ni-cad and lithium are not compatible so you must use the correct charger for the battery type. Also you should not mix the two battery types in the same device.

Will only charge batteries that came with it. Will not charge any other AA batteries

Brilliant batteries still working well

Misleading as the real capacity is only 2400 mah. Normally the description would be in mah not mwh. Don't be fooled.