Rechargeable Li-Ion 18650 batteries Petromax 3450mAh set of 4 for Petromax LM500 LED lantern

Set of four rechargeable Li‑Ion 18650 batteries with a capacity of 3450mAh and nominal voltage of 3.7V, designed for use with the Petromax LM500 LED lantern and other devices that accept 18650 cells. These high‑capacity cells serve as replacement or backup power, delivering extended runtime for lighting and portable equipment. The pack contains four identical cylindrical cells sized to the 18650 standard for compatibility with most devices built for this battery format.

Advantages

High capacity 3450mAh cells provide longer operating time compared with lower‑capacity 18650 cells, reducing the need for frequent recharging during extended outdoor use. Rechargeable Li‑Ion chemistry offers a favorable energy‑to‑weight ratio and consistent voltage output across discharge. Supplied as a matched set of four, the batteries are ready to install together for balanced performance in multi‑cell devices such as the Petromax LM500 LED lantern.

Suitable for

• Petromax LM500 LED lantern (replacement or backup cells)
• Camping and outdoor lighting
• Emergency and backup power for portable lamps
• Other devices specifying 18650 rechargeable cells

Key specifications

• Cell type: Lithium‑ion (Li‑Ion), cylindrical 18650 format
• Nominal capacity: 3450 mAh
• Nominal voltage: 3.7 V
• Quantity: set of 4 identical cells
• Typical use: high‑capacity power for LED lanterns and portable electronics

How to use

Install the cells according to the device manufacturer’s polarity markings and instructions. For use in multi‑cell devices, insert all four batteries together to ensure balanced runtime and performance. Charge the batteries with a compatible charger designed for 18650 Li‑Ion cells, following the charger's instructions and recommended charging current. Do not force cells into incompatible battery compartments or attempt to modify their terminals.

Usage recommendations

Store batteries in a cool, dry place and avoid exposure to extreme heat or direct sunlight. Use a charger intended for lithium‑ion cells and never leave charging batteries unattended for extended periods. Inspect cells periodically for damage, leakage, or deformation and replace any cell that shows signs of wear. Follow all safety guidance from the device and charger manufacturers to ensure safe operation.