MN20 is 2.5A bulb using 2 li-ion and AW's new protected 18500 will provide more than 3.5A with single click.
You will get good output for about 30 minutes per charge.
yea, the MN16 gets a more hefty overdrive on li-ion than the MN20 does. The MN16 is really more like a [email protected]@3275K@30-hour lamp, while the MN20 is something closer to a [email protected]@3275K@30-hour lamp. So the MN20 operates very close to it's *design* voltage on li-ion cells, while the MN16 gains about 50% output from the overdrive on li-ion cells. not to mention, being boosted to around 3375-3400K region, and around 2.7amps.