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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NANFU Rechargeable Lithium/Li-ion Batteries, AA rechargeable batteries, Micro USB Charger included, Constant Output at 1.5V, Quick Charge less than 2 hours, 2775 mWh electrical core power- 4

NANFU Rechargeable Lithium/Li-ion Batteries, AA rechargeable batteries, Micro USB Charger included, Constant Output at 1.5V, Quick Charge less than 2 hours, 2775 mWh electrical core power- 4

Product ID: 542589201

Details

Battery cell composition
Lithium Ion
Brand
Tenavolts
Number of batteries
4 AA batteries
Recommended uses for product
Toys
Voltage
1.5 Volts

⚡1.5V constant output

🔋1000 recharge cycles

⏱️1.8-hour quick charge

Description

🔋 Power up faster, last longer, and stay ahead of the pack!

ECO WALLET FRIENDLY - Up to 1000 recharge cycles means fewer replacements, saving money and reducing waste.
UNWAVERING POWER BOOST - Consistent 1.5V output ensures your devices run at peak performance without voltage drops.
LIGHTNING FAST RECHARGE - Fully charged in just 1.8 hours—cut your downtime in half compared to traditional Ni-MH batteries.
READY FOR ALL YOUR DEVICES - Perfect for toys, remotes, and gadgets demanding reliable, long-lasting power.
EXCLUSIVE CHARGER COMPATIBILITY - Unique Tenavolts charger guarantees optimal battery health and safety with every recharge.

Tenavolts NANFU AA rechargeable lithium-ion batteries deliver a stable 1.5V output with ultra-fast 1.8-hour charging and an impressive 1000 recharge cycles. Designed exclusively for use with the Tenavolts micro USB charger, these batteries combine cutting-edge technology with eco-conscious durability, making them the smart choice for professionals and tech-savvy users seeking reliable, long-lasting power.

Specifications

Amperage	1.5 Amps
Antenna Location	Toys
Asin	B07HQ7QV7W
Battery Cell Type	Lithium Ion
Brand	Tenavolts
Compatible Phone Models	AA lithium battery
Customer Reviews	4.5 4.5 out of 5 stars (2,986) 4.5 out of 5 stars
Item Dimensions	13.2 x 9.9 x 3.3 centimeters
Item Weight	176 Grams
Model Number	VD-U4XU-O06R
Number Of Batteries	4 AA batteries required. (included)
Reusability	Rechargeable
Upc	191763000717
Voltage	1.5 Volts

Reviews

User

Tenavolts Konstante1.5V Leistung AA Lithium Wiederaufladbar Akkus (x4)

Entspricht den Erwartungen.

11.11.2025

User

Amazing

After going through countless batteries for my hands free toilet. After several weeks I am amazed at how much power the batteries still have. Motion sensing is perfect due to the 1.5v. If you have products that you use frequently these are a must. Great speed while charging. Great performance. Bring another set for my Xbox controllers.

5.04.2026

User

Un buon prodotto

Confezione, qualita' e prime impressioni molto molto positive. Dai test su internet sono di medio alto livello, la giusta soluzione per avere batterie ricaricabili ma con voltaggio da 1.5V. Inoltre unica marca seria al momento ad avere la versione AAA. Quando cariche il LED blu si spegne.

8.01.2022

User

Great product

This product is so somple to use and it works perfectly.

21.12.2024

User

Pile rechargeable qui fait l'affaire pour le moment par contre à voir sur le long terme

J'utilise les piles rechargeables pour les caméras de surveillance blink de chez Amazon. Cela fonctionne bien même si au niveau longévité je dois les changer environ toutes les trois semaines ce qui est un peu plus qu'avec les piles non rechargeables par contre les économies se feront sentir rapidement une fois le prix d'achat amorti. A voir cependant sur le long terme.

19.03.2023

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