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Deleted member 174758
They are Waitley BL1890 batteries and were bought from eBay. Circa £100 the pair. In regular use they are used 1 to 3 days a week and I bought them in April. I bought them having originally bought a couple of BL1860s from the same seller back.in August 2019. That pair are still in use. I also have a second pair of BL1860s bought in May - and I did manage to kill one a month back, by leaving it outdoors whilst I took my break. And then it hoiked it down (rained heavily) for most of the time, which didn't do the circular saw it was on any favours, either.
If I can sound a word of caution about "snide" batteries: AFAIK none of these aftermarket batteries have any form of in-built battery protection, so I avoid using them on high amperage tools (e.g.angle grinders,large diameter hole saws/drills, etc) where the current draw can cause battery overheating. Also do not push any tool.to get the last drop of energy out of the battery - if the battery starts running low swap it out for another, don't push it until you kill it. A little extra thought goes a long way to longer battery lifespan
If I can sound a word of caution about "snide" batteries: AFAIK none of these aftermarket batteries have any form of in-built battery protection, so I avoid using them on high amperage tools (e.g.angle grinders,large diameter hole saws/drills, etc) where the current draw can cause battery overheating. Also do not push any tool.to get the last drop of energy out of the battery - if the battery starts running low swap it out for another, don't push it until you kill it. A little extra thought goes a long way to longer battery lifespan