The Fuji X10 is an exceptional compact which however has the disadvantage of offering a very limited range (150 photos with quick visualization rendering but without getting a slideshow) 37 original battery, it makes a little. We can be ready to invest the price of an entry-SLR in a compact booster to a 7D without want to be caught for a pigeon on spare parts. I had a disappointing experience with a compatible battery on a 450D which after one year had a range divided by 2 compared to an original. Here the price ratio is 1 to 5, in which I tried telling myself anyway even if autonomy was 2 times less, it was still interesting. Purchase a set of 3 batteries. After about 5 cartridges each, autonomy is strictly identical to that provided by Fuji. A check on the duration but in any case, the supplier is serious and the quality of battery. Batteries for the price inenvisagées open possibilities for a one-week trek for example, no problem, a battery per day ;-)