As a replacement for BR435 bought for a small pen flashlight, see eg the keyhole. Unfortunately, the batteries were relatively quickly consumed again, at least one of them. This type batteries for such a purpose (Flashlight batteries) probably a bit too bad, especially if you needed it in series two (Is consumes a battery, the lamp will no longer, although the second battery is still good.) This is obviously more of a negative vote across the pen flashlight, but so different rates should not be used batteries from a package!
