How much time will it take to completely charge the battery? 1 to 1.five hours How much time will it take to charge the battery to 50%? 30 to forty minutes When charging the battery for 30 minutes, to what % is it charged? ~50% How many smoke only tests https://binksites.com/story8261224/testifire-xtr2-fire-alarm-testing-equipment-range-faqs