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Answers to some of our most frequently asked questions.

We provide a 30-day money-back guarantee on products that are undamaged and in the original packaging. We also provide a refund or exchange on any defective products within one year of purchase.

Yes. All GRENGINE™ products are capable of outputting power while charging.

We recommend charging your GRENGINE™ products every 3 months if not in use.

2000 – 5000 cycles. One cycle is fully charged to full discharged. If using one cycle/day that equals 5 – 13 years using best battery maintenance practices.

The G1000 is 1000 continuous / 1600 peak. The UltraLite is 300 continuous / 450 peak. The Micro does not have an inverter.

The G1000 weighs 24 pounds with one battery. Each battery is 12 pounds. The UltraLite weighs 12.8 lbs.

G1000 takes 6.5 hours using AC power, or 10 hours using solar power in optimal conditions

The UltraLite takes 5 hours using AC power or 8 hours using solar power in optimal conditions. However, this depends on the size of the solar panel. If you’re using a big 300-Watt panel, the UltraLite could be charged in under 2 hours.

For the G000 – yes. Just remove the dead battery pack for recycling, and purchase a new one, while keeping your original GRENGINE™ inverter cap. The battery in the UltraLite cannot be replaced at this time.

For the G1000 there’s no need. The stackable battery system allows you to stack batteries as needed. The G1000 comes with one battery pack and individual batteries may be purchased separately.