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.

Lithium ion or lithium polymer

These are lithium ion. Lithium polymer are the flat packs like they use in phones.

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🔋 Charge ahead with power that keeps up with your hustle!

EXCLUSIVE CHARGING TECH - Pairs only with certified Tenavolts chargers for optimized battery health.
LIGHTNING FAST RECHARGE - Fully charged in just 1.8 hours—cut your downtime drastically.
POWER THAT LASTS LONGER - 2775mWh capacity fuels your high-demand devices without compromise.
CONSISTENT PEAK PERFORMANCE - Stable 1.5V output from 100% to 0% charge ensures no power dips.
ECO SMART WALLET FRIENDLY - Up to 1000 recharge cycles reduce waste and save money over time.

TENAVOLTS AA 4 Pack rechargeable lithium batteries deliver a robust 2775mWh capacity with a rapid 1.8-hour full charge time. Engineered for consistent 1.5V output throughout their lifespan, these batteries support up to 1000 recharge cycles—double the typical NiMH lifespan—making them an eco-friendly and cost-effective power solution for high-demand devices like insulin pumps, toys, remotes, and portable audio players.

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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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