| 1. Heat - placing the AC adaptor underneath the | | | | capacity. After this they will rapidly deteriorate. All |
| notebook during charging seriously degrades the | | | | Lithium-Ion batteries have a finite life and will need to |
| battery over time. Similarly, leaving the notebook on top | | | | be replaced after prolonged use. |
| of a monitor, radiator or car window in direct sunshine | | | | Tips for improving discharge times To increase the hp |
| are common causes of heat degradation (over a | | | | dv9700 laptop battery discharge time (maximum |
| period of months). | | | | running time), try the following: 1. Set the Control Panel - |
| 2. Using the battery until it is flat. Lithium-Ion batteries | | | | Power profile to Max Battery and use timeouts to |
| tend to last longer if you avoid using them when they | | | | hibernate the system when not being used for more |
| are nearly flat. Try to always charge them well before | | | | than ten minutes or so. |
| they become empty (ie as often as possible). | | | | 2. Set the power settings so that the screen and hard |
| 3. Leaving the Hp hstnn-db11 battery hp nc6000 | | | | disk are disabled after five minutes of inactivity. |
| battery in a fully discharged state. Typically this | | | | 3. Reduce the screen brightness as much as you can. |
| happens when you repeatedly switch the system on in | | | | 4. Switch off the wireless card whenever you are not |
| order to use it for a few minutes longer after it has | | | | using it. |
| shut down due to a low battery, and then do not | | | | 5. Disconnect any peripherals eg if you use a USB |
| charge the battery for many months. The battery will | | | | flash memory stick, copy any files you need and then |
| then not charge due to a safety mechanism in the | | | | unplug it. This can give an extra 20 minutes or so of |
| battery to prevent possible overheating and explosion | | | | use. |
| which may result from charging a fully discharged | | | | 6. Do not connect PCMCIA cards (PC cards) unless |
| battery. | | | | you need to use them. Remove them when not |
| 4. Incorrect AC adaptor used. If the wrong AC | | | | needed. |
| adapter is used which has too low a voltage or | | | | 7. Change the Control Panel - Alarm settings to their |
| current rating, the notebook may run on the mains but | | | | absolute minimum (eg 4%). This can gain an extra ten |
| the battery may not charge. RM always label both the | | | | minutes of use (but the notebook may cut out |
| AC adaptor and the notebook with the same RM | | | | suddenly if you have a degraded battery). |
| serial number. | | | | 8. Do not access a CD more than required. If possible |
| 5. Extended use. Lithium-Ion batteries are rated for | | | | copy or install any software you might need from the |
| 250-500 full charge/discharge cycles (depending on | | | | CD onto the hard disk and then remove the CD. |
| cell type used) at which point they will be at 50% | | | | |