Forum menu
The local scallywags (a.k.a. thieving b***ards) are at it again and took £50,000 worth of motorbikes from just up the road recently. Checking my alarms I find that the batteries are flat on the remote ones. They are these, from Navaris:
The sounders rely on C cells (x3), rechargeable versions of which I keep forgetting to buy so I nip down to town, buy non- rechargeables and then forget to buy what I really need. Rechargeable 'C' cells. I usually turn off the power to the shed at night so relying on the optional 5V external supply isn't really well, an option.
(FWIW, before this turns into a discussion of bike security the bikes are all stored in a double locked, dead locked and internally bolted brick-built shed and I also have a wired alarm system, gold level chains and locks plus a very protective dog. I'm not sure if I'm paranoid, pragmatic or both.)
My rechargeable C and D cells are Eneloop hybrid AA cells in some russian doll style holders that build them up to the appropriate side. Work a treat
Something like this.
https://www.amazon.co.uk/EBL-Battery-Converters-Adapter-Holders-White/dp/B0768T58PT
Ooh, I'm sure that could be a good idea, but I can't see the Kindle link.
Onzadog has it. The best solution is AA eneloops in a holder. The eneloops hold their energy over time well and the AAs have great capacity compared to C cells for the price as they are just a much more popular size. You can just search for eneloop on Amazon
Screwfix have the Varta 'C' cells. As others have pointed out though you can't beat eneloops.
Sorry about the Amazon link. No idea why that didn't work. Google battery adapter converter AA to C and plenty should pop up.
Normally I'd have said eneloops, they're rechargeable batteries but better (capacity, shelf life, current delivery).
But has anyone tried the USB rechargable lithium AAA/AA/C cells? Even allowing for a bit of self discharge a 1.5V 5000mAh lithium battery is going to last quite a bit longer than a 1.2V 2000mAh, it's got over 3x more energy.
All of those seem a bit of a compromise as you’ve still got to remember to change/charge the batteries. If there’s power to the shed most days could you rig up a single power supply that automatically charges when the shed power is on (or a small solar panel).