Newf and TAM,
A fully charged AxiomAir battery will last on average for about two weeks before discharging. This is due to standby leakage current of the input filter capacitor, the software power switch, and the internal battery pack monitoring electronics. We recommend leaving the AxiomAir plugged in at all times since the power consumption is only around 1W when the unit is shutdown and the battery fully charged. There is sophisticated circuitry built into the battery pack itself that monitors individual cell voltages and currents, pack temperature, and charging. When the battery pack reaches full charge this circuitry takes the charging supply off-line. Only when the battery level drops below a full charge will the charging circuit "top up" the battery. There is no harm to the system or the battery by leaving the system plugged in continuously. When the battery starts charging from an empty or near empty state there will be some warming of the battery housing. This is from the charger electronics and not the cells themselves and is perfectly normal. As for the smell, it could be some remaining out-gassing of the paint used on the AxiomAir itself rather than anything to do with the battery. If there is a situation where you need the battery to be ready to go and don't have the opportunity to keep the system plugged in you can always remove the battery pack, disconnect the battery wire harness, and reinstall the battery pack. By doing this the battery will remain fully charged for months and can be re-connected when ready to use.
Thanks,
Andrew
