Thanks for all the advice.
The T20 cameras I have only take 4 AA’s and although they have a DC power port they don’t actually come with a cable. Although the instructions don’t recommend it I bought some Energizer Power Plus AA (2000 mAh) as they were £12 a pack but 2 for £16 in Asda and so far they seem to be much better.
I have the cameras set to record 21.00 – 06.00, 1 minute video clips and resolution and sensors to the max. I average about 10-15 clips per night (including 2 or 3 cat triggers) and so far the batteries are lasting about a week.
The main issue now is when to charge them so the batteries don’t run out but I’m not overcharging them? The way I always used to understand it was that it’s better to fully discharge rechargeable batteries to prolong their life but I understand the opposite is true for modern lithium ion batteries. These Energizer ones are alkaline so any expert advice is much appreciated
