| 摘要 |
An improved vehicle battery providing a constant source of reserve electrical power. The primary source of electrical power is contained within a housing and is connectable to an electrical load. The reserve battery is also contained within the housing and is selectably connectable in parallel to the primary battery by a switch or relay. The reserve battery is of at least equal electrical power to that of the primary battery. Therefore, an adequate reserve is always maintained, even for adverse and extreme conditions that would be too much for smaller reserve batteries, but includes circuitry to disallow discharging of the reserve battery unless it is connected in parallel to the primary battery.
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