The Volt Range
Will it run your gear?
Select your Volt product below to calculate exactly how long your setup will last.
Step 1 — Select your product
Volt Dropper Runtime
How long will your 12V fridge, fan, or gear run off your tool batteries?
What are you running?
Fridge size
Set temperature
Your battery
Number of batteries
Battery condition
Estimated runtime
Based on average compressor cycle of 40–50%. Actual runtime varies with ambient temp and fridge load.
Shop the Volt Dropper →Double Adapter Runtime
See exactly how much extra runtime you get running two batteries instead of one.
What are you running?
Fridge size
Battery size (per battery)
Single battery
With Double Adapter
Volt Replenisher Charge Time
How long does it take to charge your tool batteries while driving?
Battery capacity
Starting charge level
How many batteries?
The Replenisher charges one battery at a time. Times are shown sequentially.
Estimated driving time to full charge
Estimated at 2A charging rate via 12V/24V socket. Actual charge time varies with vehicle voltage, cable quality, and battery condition.
Shop the Volt Replenisher →Volt Mini USB Power
How long can you power your USB devices — or how many charges do you get?
What are you charging?
Battery capacity
Estimated power
Based on 18V × Ah at 85% battery draw efficiency and 85% USB conversion. Device battery Wh values are typical averages.
Shop the Volt Mini →Volt Rapid USB-C Runtime
How long can you power your laptop, Starlink, or other USB-C device off your tool batteries?
What are you powering?
Battery capacity
Number of batteries
Estimated runtime
Calculated at 85% battery draw efficiency and 90% USB-C PD conversion. Device draw values shown are typical sustained use (not peak/max spec).
Shop the Volt Rapid →