The first step of testing the PB06’s jump-start capability is finding a car with a dead battery. My starter failed on me back in December, leaving the car stranded in -20°C weather for a few days while I repaired it. When I re-installed my starter, I discovered that my trunk switch had been stuck on, leaving me with a very dead frozen-over battery that wouldn’t hold a charge beyond 8V, indicating that two of its six cells must have an internal short-circuit or high self-discharge rate, possibly from cracked separators or internal walls.
About a month later, I decided to jump-start my car one last time for a battery swap. Here, my car has been sitting for two days since the last time I started it, and the battery already dropped to 7V.
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