discussed power tank problem

Elaine said that her Celestron power tank seemed to be acting up. I suggested that perhaps the battery was dead. Would last many years with a good charging regime. But, worst case, the sealed lead acid battery within could be easily replaced, and at a cheaper rate than a whole new unit. Cautioned that the charger and charging circuitry was not smart so one had to be careful. A recommended operating a dew heater as a load test.