Appendix F Batteries And Chargers - Hach Sigma 950 Instrument Manual

Appendix F Batteries and Chargers

ATTENTION
Pour préserver la sécurité de l'utilisateur et éviter d'endommager l'équipement,
rechargez exclusivement les accumulateurs avec les chargeurs Hach Company
spécifiés.
CAUTION
To ensure user safety and prevent damage to equipment, use only the specified
Hach Company battery chargers to recharge batteries.
F.1 Lead-Acid (Gel Cell) Batteries
The manufacturer's lead-acid batteries are designed to prevent electrolyte leakage from
the terminals or case. The electrolyte is suspended in a gel, which ensures safe, efficient
operation in any position. Gel cells are classified as "Non-Spillable" and meet all
requirements of the International Air Transport Association.
Maintenance
The manufacturer's lead-acid batteries are maintenance-free.
Charging
The manufacturer's lead-acid cells are designed to be fully charged in 22 to 24 hours
using their lead-acid battery charger. Do not exceed 24 hours or you may damage or
shorten the life of the battery. The charge rate is 500 mA dc. LED is lit, indicating the
battery is charging. The battery is fully charged when the LED indicator turns off.
Temperature
At higher temperatures, the electrical capacity that can be taken out of a battery
increases. At lower temperatures, the electrical capacity that can be taken out of a battery
decreases. However, excessive heat kills batteries. Avoid placing batteries near heat
sources of any kind. To maximize battery life, operated the battery at an ambient
temperature of 20 °C (70 °F). The permissible operating temperature range is -15 to 50
°C, however, use in the 5 to 35 °C temperature range is recommended.
Storage
Store lead-acid batteries in a cool, dry place. Their low self-discharge rate and excellent
charging characteristics permit storage for up to one year without loss of efficiency or
appreciable deterioration of battery performance.
F.2 Nickel-Cadmium Batteries
Nickel-cadmium batteries provide superior power capabilities when used at low
temperatures. They also perform a higher number of charge/discharge cycles than
lead-acid batteries.
Table 49 Lead-Acid Battery Storage Recommendations
Storage Temperature
0 to 20 °C
21 to 30 °C
31 to 40 °C
41 to 50 °C
Maximum Recommended
Storage Time
12 months
9 months
5 months
2.5 months
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