As its now public knowledge;

Lenovo / IBM are performing a voluntary recall on certain laptop batteries, which you may not be aware of. Take a look at www.lenovo.com/batteryprogram if you've got one.

Lol, I've got 3 Lenovo laptops, all manufactured within that timeframe, but none of them are being recalled.

Lucky bugger

I'm waiting on responses from users still (funnily enough, battery serials we dont bloodly record) - unfortunately this could mean a shit load of work for my team

Yep, much work here too. The funny thing is that the Online Checking System at the IBM Website says that all my battery Packs are not affected (you can enter the Barcode Number). But the FRU / ASM Number says a different thing. When I have all Numbers together I will call IBM and see what they say about this.