Ansmann maxE
ANSMANN maxE plus and maxE rechargeable batteries
The ANSMANN maxE and maxE plus rechargeable battery merges the benefits of NiMH rechargeable batteries and disposable batteries in one cell:
- Up to 1000 times rechargeable
- Very low self discharge
- Ready to use right away (cell is pre-charged)
- High current output
- Cost-effective and environmentally friendly
- No special charger needed
- Perfect for nearly all applications
maxE Self-discharge
The capacity of this new generation of rechargeable batteries has been increased significantly. So far AA size rechargeable batteries could only offer a maximum of 2100mAh. The latest maxE plus cells now come with 2500mAh and so give almost 20% more run time in your applications.
Click HERE to buy the Ansmann maxE and maxe plus batteries from Tantronics
Can Rechargeable Batteries be used in Smoke Alarms
Smoke Alarm Batteries
Yes, but perhaps the question should be:
“Should I use rechargeable batteries in a Smoke Alarm”
One of the problems with conventional rechargeable batteries is the self discharge – at between 1% and 2% per day this is higher than the drain from the smoke alarm itself.
So a conventional rechargeable will be pretty much flat after just a couple of months or so. This in itself is not such a problem as you can just take it out, recharge it and put it back in.
The real problem is how quickly the voltage drops off as the rechargeable battery approaches exhaustion. In most single use batteries the voltage drops off at a fairly consistent rate, so the low battery warning beep you get in a Smoke alarm can go on for weeks. Rechargeable batteries hold their voltage really well right to the end, but then drop off very quickly, this means you get the low battery warning for a much shorter time – This can be just a day or so, perhaps even just a few hours.
So unless you check your smoke alarm battery ever day, there is a real possibility of the rechargeable battery going flat without you ever knowing! – not a great thought.
So I think the answer is “Yes you can, but you probably shouldn’t“.
Instead I would suggest you use conventional Alkaline type batteries or, for extra piece of mind, why not look at using the ULTRALIFE Lithium PP3 type battery, this can last up to 10 years in a Smoke Alarm.
More details HERE
Link to this post: "http://www.tantronics.co.uk/blog/2010/01/can-rechargeable-batteries-be-used-in-smoke-alarms/"