Are these truly 1.5v or are they 1.2v like all of the other rechargeable AA batteries?

Yes, they maintain a steady 1.5V. Others have done tear-downs on these, and it appears inside is a 3.7V Li-ion cell that has been brought down to 1.5V using miniaturized electronic circuitry. One caveat - these batteries will maintain a steady 1.5V until the very end of the discharge cycle, and then suddenly drop the voltage. Thus, keep a few spares handy.

Your first generation tenavolts state in title that they are "lithium/li-ion", so is this interchangeabl or is this lithium battery different? how so?

Exactly! The cathode/anode materials of TENAVOLTS are LiCoO2/Graphite, which are widely used in rechargeable battery. They would be interchangeable and reversible when charging and discharging.

Batteries Included	Yes
Batteries Required	Yes
Brand	Tenavolts
Manufacturer	NANFU
Item Model Number	Rechargeable AA Battery
Size	AA 4 Pack
Product Dimensions	13.21 x 9.91 x 3.3 cm; 176 g
Item Weight	176 Grams

TENAVOLTS AA 4 Pack

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Description

Specifications

Common Questions