The Hidden Cost of Cheap Lithium
Many consumers gravitate toward the lowest price tag, but portable jump starters use lithium-polymer (LiPo) or lithium-iron-phosphate (LiFePO4) batteries that have finite lifespans. A unit that costs $50 but lasts for 300 cycles is significantly more expensive per use than a $150 unit that lasts for 2,000 cycles.
Why Cycle Life Matters
Every time you jump-start a vehicle, you consume a portion of the battery's total cycle life. Furthermore, self-discharge and storage conditions degrade the battery even when not in use. By inputting the expected number of jump-starts you anticipate needing over the next few years, you can determine the 'Cost Per Start'.
Making the Right Investment
If you are a frequent user—or if you live in an area with extreme temperatures that degrade batteries faster—a higher upfront cost for a LiFePO4 unit is almost always the better financial decision. Use this calculator to see the break-even point between a budget model and a professional-grade unit. You will often find that the 'expensive' unit pays for itself within just a few years of avoided replacements.