R850/R840/R830
Batteries exhausted timeWhen you turn off the power of your computer with batteries fully charged, the batteries will be exhausted within the following approximate period:
Retention Time for R850 seriesBattery type | Sleep Mode | Shut Down Mode |
Battery pack (48Wh, 6 | about 4 days | about 75 days |
cell) |
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Battery pack (66Wh, 6 | about 5 days | about 100 days |
cell) |
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RTC battery | about 30 days | about 30 days |
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RTC battery (High | about 90 days | about 90 days |
Capacity) |
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Battery type | Sleep Mode | Shut Down Mode |
Battery pack (66Wh, 6 | about 5 days | about 70 days |
cell) |
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Battery pack (93Wh, 9 | about 5 days | about 105 days |
cell) |
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RTC battery | about 30 days | about 30 days |
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Battery type | Sleep Mode | Shut Down Mode |
Battery pack (66Wh, 6 | about 5 days | about 115 days |
cell) |
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Battery pack (93Wh, 9 | about 7 days | about 165 days |
cell) |
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RTC battery | about 30 days | about 30 days |
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To maximize the life of your battery packs:
At least once a month, disconnect the computer from a power source and operate it on battery power until the battery pack fully discharges. Before doing so, follow the steps as detailed below.
User's Manual |