3.As the AC product is operated, you can check the level of the battery as detailed in Section 4.1. This will give you an idea of how much time remains until the battery needs recharging.

4.When the battery becomes nearly discharged, or “empty”, a low voltage warning will sound. This will give you time to shut down a computer, for example. If this warning is ignored, the inverter will switch off automatically a few minutes later to prevent battery damage. (See Section 5.3 for full details.)

5.Fully recharge the internal battery as soon as possible after each use. (See Section 8.)

5.3Automatic Overload, Overheating, and Low Battery Protection

Portable Power 250’s inverter has built-in protection against output overload and from overheating. If an AC product rated higher than 230 watts (or which draws excessive surge power at start up) is connected, or if the inverter exceeds a safe temperature, power to the AC outlet will automatically shut off.

If an over temperature condition caused the shut down, the audio alarm will sound. To reset, unplug the product, turn off theAC Power ON/OFF Switch, and let the inverter cool.

If an overload condition caused the shut down, unplug the product and confirm that the product power requirement is 230 watts or less before attempting to restart the product. In the case of an extreme overload, the 30-amp external fuse located below the AC outlet will open. It will be necessary to replace this fuse in order for power to flow to the AC outlet. Replace only with a 30 A, 32 Vdc, automotive blade type fuse which is available at many auto parts stores.

If the battery is allowed to discharge excessively, damage may occur. To prevent this, an audio warning alerts you when the internal battery is nearly discharged (10.7 volts). If this warning is ignored, the inverter will automatically switch off when the battery reaches “empty” (10.0 volts). Promptly recharge the battery. (See Section 8.)

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