Originally Posted by Zippi
I just installed a 2 cell, 2800 Lipo. The battery got down to 3.90 per cell but the battery meter showed no drain. It was solid black. Is the meter not going to function properly with a Lipo?
The meter is going to be based on 7.2V nominal voltage for the stock NiMH pack. Your SD-10g only knows that it is receiving voltage, it doesn't know if it's from the stock battery or from a LiPo pack. If your LiPo transmitter pack is a 3.90 per cell, that's still 7.8V and still well above any area of concern for the transmitter.
I'd suspect that you'll have to get your LiPo transmitter pack down below 3.6V per cell before the meter displays anything besides full. Take Thud Driver's advice and focus on the voltage rather than the battery icon.