10 External Battery
CAUTION 
◇DO NOT use (an) external batteries when internal batteries are inserted. Failure to do so may result in product damage or a problem.
It could cause a problem, such as product damage.
◇DO NOT connect batteries in parallel.
◇Replace batteries with new ones before the end of their life.
◇When the STP pump is left unused over the specified period, charge battery for 90 minutes, or replace it with a new one before starting the STP pump.
NOTICE
◇The life, allowable shelf life, and operation frequency of the battery differ depending upon the type of the battery and ambient temperatures. See technical data and information prepared by the battery manufacturer.
10.1Specifications for the External Battery
When you use external batteries, select one in accordance with the specifications given in Table 10.1.
CAUTION 
◇If you use external batteries which do not conform to the specifications, battery backup will not function during a power failure which could result in damage to the STP pump.
Table 10.1 Specifications for the External Battery
Item | Specifications |
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Capacity | 1.8 Ah or more |
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Voltage | 48 V |
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Current | 2.3 A |
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Operation time | Approx. 6 minutes |
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Operation frequency | Continues 2 times or more |
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Charging voltage | 55 V |
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It is recommended to use PORTALAC Series
