OEM No/Model: 3366985
Mini Car Battery Booster Jump Starter Power Bank
Features:
Jump Starter - up to 300 amp (600 amp peak) cranking power for jump starting your vehicle's flat batteryAir Compressor - 260 psi for fast tyre inflation - also includes display gaugeDC 12V / 10 amp output socket featuring overload protection for use with items that are powered via cigarette plugRechargeable via AC Adaptor or DC car lighter adapter
Every lithium ion battery pack should have (must have?) a safety board which monitors the charge and discharge of the pack, and prevents dangerous things from happening. The specifications of these safety boards are dictated by the cell manufacture, and may include the following:Reverse polarity protectionCharge temperature--must not be charged when temperature is lower than 0° C or above 45° C.Charge current must not be too high, typically below 0.7 C.Discharge current protection to prevent damage due to short circuits.Charge voltage--a permanent fuse opens if too much voltage is applied to the battery terminalsOvercharge protection--stops charge when voltage per cell rises above 4.30 volts.Overdischarge protection--stops discharge when battery voltage falls below 2.3 volts per cell (varies with manufacturer).
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