KeepPower Button-Top 18650 3500mAh (Set of 2)

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The KeepPower 18650 3500mAh rechargeable battery is a premium high-capacity lithium-ion battery built using a Sanyo NCR18650GA internal cell. Designed for applications requiring maximum runtime and dependability, this battery is well suited for thermal optics, night vision devices, and other electronics where consistent output is critical.

This is a protected button top 18650 battery, measuring approximately 68.5–69.5mm in length due to the integrated protection circuit. This added length provides built-in safeguards against overcharge, over-discharge, overcurrent, and short circuiting.

With a nominal capacity of 3500mAh and a 3.7V output, this battery is designed to deliver extended runtime while maintaining stable voltage under load. The internal Sanyo/Panasonic NCR18650GA cell is widely regarded as one of the highest capacity and most reliable 18650 cells available, offering a balance of runtime and performance for demanding applications.

Please Note: Battery length requirements can vary between thermal optics manufacturers (flat top vs. button top, etc.). Always measure your existing battery length to ensure reliable operation.

Compatible Charger Options

For safe and efficient operation, we recommend pairing these batteries with one the following high quality XTAR charger options:

XTAR VC8S LI-ION / NIMH 8-BAY BATTERY CHARGER

XTAR VC2SL LI-ION / NIMH 2-BAY BATTERY CHARGER

Features

• 3500mAh High-Capacity Lithium-Ion Battery
• Sanyo NCR18650GA Internal Cell
• Protected Button Top Configuration
• Approximate Length of  68.9mm
• Nominal Voltage: 3.7V
• Max Continuous Discharge: ~8A (Protection Limited) 
• Built-In Protection Circuit (Overcharge / Over-Discharge / Short Circuit)
• Stable Voltage Output Under Load
• Designed for Extended Runtime Applications
• Ideally Suited for Thermal Optics
• Includes (2) Batteries Per Package

Items Included

• KeepPower 18650 3500mAh Protected Button Top Battery x 2
• Battery Case

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