Measuring voltage on micro RC batteries
If you fly micro aircraft - or other things with small ~100mAh batteries and miniature connectors, you may have found checking the voltage to be a pain. Your standard battery tools can't deal with them, and the exposed contacts are just to small to get DMM probes into.
I found a solution. I ordered an SMD probe for my DMM for other reasons, but it arrived with a new micro heli. So it and the battery were sitting on my desk, and I had to try. Turns out it works really well for checking voltage on those batteries.
I recommend getting one of these probes just for those batteries. If it saves you one bad battery, it'd be worth the cost.