The Nikon COOLSHOT 20 GIII uses CR2 3V lithium. It uses a replaceable battery rather than an internal rechargeable cell.
Laser • Released 2024
What battery does the Nikon COOLSHOT 20 GIII use?
Buy a fresh CR2 3V lithium battery. CR2 and CR123/CR123A are different physical sizes, so do not substitute one for the other.
COOLSHOT 20 GIII battery at a glance
Replaceable battery
Replace the battery instead of charging it
Published model-specific figure
COOLSHOT 20 GIII battery specifications
| Battery type | CR2 3V lithium |
|---|---|
| Battery system | Replaceable battery |
| Rechargeable | No |
| Charging port | Not applicable |
| Published battery life | Approx. 10,000 measurements |
Battery system explained
CR2 is a compact 3V lithium battery commonly used in laser rangefinders. It is not the same physical size as CR123/CR123A.
The published battery-life figure is Approx. 10,000 measurements. Actual runtime can vary with usage, temperature, wireless/GPS features and battery age.
How to replace the battery
Battery life and what affects it
The published figure is Approx. 10,000 measurements. Actual battery life can vary with usage frequency, temperature, wireless/GPS functions, display use and battery age.
Battery troubleshooting
COOLSHOT 20 GIII will not power on
Start with a fresh CR2 lithium 3V battery and confirm the polarity shown inside the COOLSHOT 20 GIII battery compartment. Because this model uses a replaceable cell, a known-good battery is the quickest way to rule out a power issue.
Fresh CR2 battery but still no power
Confirm the cell is CR2 rather than CR123/CR123A, then inspect the spring/contact surfaces for dirt, corrosion or a battery that is not seated fully under the cap.
Intermittent power after wet weather
The COOLSHOT 20 GIII is listed as IPX4. Even so, check the battery compartment and seal for moisture or debris before installing another battery.
Battery drains faster than expected
If the COOLSHOT 20 GIII is consuming CR2 lithium 3V cells unusually quickly, try a fresh reputable battery and inspect the compartment for moisture, corrosion or a cap that is not closing tightly.
Battery care and storage
Nikon COOLSHOT 20 GIII battery FAQ
What battery does the Nikon COOLSHOT 20 GIII use?
The listed battery specification is CR2 3V lithium.
Is the Nikon COOLSHOT 20 GIII rechargeable?
No. This model is listed as using a replaceable battery rather than an internal rechargeable battery.
Can I use a CR123 battery in the Nikon COOLSHOT 20 GIII?
No. This model is listed for CR2. CR2 and CR123/CR123A are different physical sizes.
How long does the Nikon COOLSHOT 20 GIII battery last?
The published figure is Approx. 10,000 measurements. Actual life varies with use and battery age.
Why is my Nikon COOLSHOT 20 GIII not turning on?
Install a known-good battery of the exact required type and confirm the polarity.
Battery type, charging port and power-system design can differ between similarly named rangefinders and regional versions. Before ordering a replacement battery or cable, confirm the exact model on the official Nikon website. Visit Nikon.