I don't know if I agree with that when it comes to batteries, the 1st party ones here are excessively overpriced and you certainly do not get your moneys worth...This matter is a simple case of what you pay is what you get.
Andrew, purchased an aftermarket battery for the GF-1/G2 from bestbatt.com. There is a UK bestbatt.com. Assuming same company.Some third party batteries are chipped.
I have a BECAM one for my GF1, and it works fine
Same here. I find the Maximal Power batteries (Amazon) last longer than the stock BLS-1 battery. Absolutely no problems.I got a couple of Maximal Power batteries in Amazon for my E-PL1 and E-P3, to replace the BLS-1 batteries, and they work perfectly well. No problems at all.