Thank you for choosing Pecron. It is a pleasure to serve you, and we look forward to supporting you in the future. Please register your Pecron product within 30 days of purchase to activate the extended warranty service (applicable only to brand-new portable power stations purchased through official Pecron channels). Note: Accessories, chargers, carts, and solar panels are not covered by the extended warranty. Warranty periods by model are as follows: E300LFP / E600LFP / EP3000-48V / EP2000S-48V: 2-year warranty; E1000LFP / E2000LFP / E2400LFP: 3-year warranty (including 1-year extended warranty); E1500LFP / E3600LFP / F1000LFP / F3000LFP / E3800LFP: 5-year warranty (including 3-year extended warranty). If you have purchased multiple units of different models eligible for the extended warranty, please select the corresponding model for each unit and submit the form separately for each. Thank you again for your trust and support.