Maintenance
•The performance of the battery decreases with the temperature.
7.2.1.2Optimal operation of the battery
The battery is charged automatically when the
CAUTION
Use only the manufacturer's specified external power supply to operate the instrument and charge the internal lithium battery pack. The specified power supply and it's plug shape, it voltage rating (12V, 2A) and it's electromagnetic characteristics are critical to assuring the DR 2800's performance and the safety of the user.
Important Note: We advise charging the battery at an ambient temperature between 10°C and 30°C, as this is the range in which it can be most effectively charged to 100%.
7.2.1.3 Lifespan of the battery
The battery has a limited lifespan. The more it is used, the more its capacity is reduced. If a fully charged battery only allows the instrument to be used for a relatively short time, replace the battery with a new one.
Note: You need not run down the battery completely before recharging it. If you recharge the battery when it still has some residual charge, this does not reduce its capacity!
7.2.1.4 Load the battery/Operating time
The time required to charge a newly installed battery is about 3.5 hours.
Operating time of a fully charged battery:
Charge: If a battery is charged to 100% capacity, and the user carries out 10 measurements per day, and the instrument is left on after each measurement for the full 15 minutes before it automatically switches off, the battery can be used for 6 to 7 days before it needs recharging.
