Canon fodder

Went to get an extra battery for my new baby today. Instead of getting an original NB-2LH battery that costs more than RM200, I opted for a 3rd party compatible battery by Keep.



Interestingly, the 3rd part battery has a higher energy capacity than the original: 740 mAh versus 720mAh. I wonder what did the 3rd party battery manufacturer did to squeeze in another 20mAh.