Illustration shows the product category, not the exact model.
Tank PRO 4000
An expansion battery for a compatible Yeti PRO setup. It adds storage to the host system and does not replace the host inverter.
- Nominal storage
- 3,994 Wh
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Where it belongs in your plan
This pack adds 3,994 Wh of nominal storage to a supported system. It does not have the same role as a complete AC power station. The host inverter, wiring, expansion limits, and supported accessories determine the finished system.
Before you choose
Expansion batteries are not standalone AC power stations. Confirm the supported host model, cable, firmware, and expansion limits.
Read the matching field guideA few useful answers
What should I check before buying the Goal Zero Tank PRO 4000?
Expansion batteries are not standalone AC power stations. Confirm the supported host model, cable, firmware, and expansion limits.
Where do the Tank PRO 4000 specifications come from?
The specifications on this page are drawn from the manufacturer source linked below. Confirm the exact model and regional version in its current manual before ordering.
Has Outage Guide hands-on tested the Tank PRO 4000?
Our guidance is based on published specifications. Where an independent reviewer has tested this exact model, we link to their findings so you can read the full account.