NOCO Boost X GBX155 4250-Amp 12V UltraSafe Portable Lithium Jump Starter (Open Box)

Update November 2, 2024 I purchased a second GBX155, thinking the first time was a fluke… It also failed in less than 13 months, just simply stops turning on… their warranty and repair is totally worthless…I copied it below in the review, costs more than buying a new unit in most cases. Save yourself some hassle and purchase another brand. I have the GBX 155 and it’s smaller brother, I bought them both at the same time in November 2021. They worked great for jumping, but they both died within a few weeks of each-other in September 2023. My old lead acid jumper is has been in service for around 5 years, and still works great. They should last longer than 22 months. Especially with light, occasional uses! Other than dying prematurely, they are nice jump packs. Here’s their awful warranty policies from their website as of 11/2/24. The cost to repair is more than the cost to purchase. In-Warranty: Months 0-12 Within the warranty period, any defective item will be replaced free of charge. Advanced replacement for In-Warranty claims is available with a credit card payment for the full retail amount. The full payment amount will be refunded within 10 business days after return is received. The defective unit must be returned to NOCO within 30 days for a credit to be issued. For claims outside of the scope of the warranty, including accidental damage or abuse, the replacement cost is $499.95. Out-Of-Warranty: Months 13-48 Months 13-24: Any defect is a flat $399.95 Repair Fee per occurrence. Months 25-36: Any defect is a flat $499.95 Repair Fee per occurrence. Months 37-48: Any defect is a flat $599.95 Repair Fee per occurrence. Out-Of-Warranty repairs exclude any claims outside of the scope of the warranty, including accidental damage or abuse. If a unit has damage deemed outside of the scope of warranty by NOCO, the customer is responsible for all shipping costs to have the unit returned. It is the sole discretion of NOCO to determine if damage is outside of the scope of the warranty. Advanced replacement options for Out-Of-Warranty depends on product availability and requires a credit card payment for the full retail amount that is currently listed on our website. The full payment amount, minus repair fee indicated above, will be refunded within 10 business days after return is received. The defective unit must be returned to NOCO within 30 days for a credit to be issued. If the defective unit is damaged or deemed outside of the scope of the warranty by NOCO, the customer must return the replacement unit within 15 business days or forfeit the full payment for the unit. To begin the warranty process, please contact support@no.co. To expedite the process, please send a digital copy of your proof of purchase, the units serial number, and detailed description of the problem.