You can't. Chargers are cheap (even a good one can cost less than a single LiPo battery). A charger is something I wouldn't scrimp on. I know it's not what you want to hear, but "get a better charger" is my strong recommendation.How do I charge a lipo battery to full capacity if my charger can only adjust in 100 mAh increments but the battery is is a 650mAh, 750mAh, etc.? Thanks for the help!