AlexPKeaton wrote:You can try the 3.7 volts. Most electronics have tolerance far greater than 0.7 volts.
A tolerance is built around the fact that it was built to fluctuate around its specified voltage. When you change that, you could fluctuate much higher than originally designed.
Also microprocessors expect certain input voltages and to skew that even slightly could cause it to malfunction.
No one is going to hook up a battery to a CMOS device wtihout going through a voltage regulator. There is too much variance on the battery over temperature and amount of charge.
Also, it appears that they are the same exact battery:
"Fully charged cell is 3.7V, but once battery is under load it will provide 3.0V (same voltage as regular non-rechargeable CR2 Litium battery). User should understand how Li-ion cell chemistry works."http://www.amazon.com/Rechargeable-Lith ... B003I3RGYO