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| R850/R840/R830 |
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| Retention Time for R850 series |
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| Battery 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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| Retention Time for R840 series |
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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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| Retention Time for R830 series |
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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.
1.Turn off the computer's power.
2.Disconnect the AC adaptor and turn on the computer's power - if it does not turn on then go to Step 4.
User's Manual |