Sorry to bother you guys again, but I'm now looking at a battery for the prem 88. The manual says 1x 17Ah or 2x 7Ah. Looking around there are loads of makes. Etc, is there any recommended make etc?
The point is that 20 to 15 years ago batteries lasted longer than the current ones made in china , probably due to more recycled lead being used in the battery and as you stated you need to replace every 5 years, all fine for systems been serviced but most DIY systems installed by the home owner seem to think the battery will last for ever.
The battery can be anything up to 17Ah. Work out or measure the power consumption of your system, multiply by the amount of hours of standby time you require, and that's the battery size you should fit.
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