Power Products Guide
Section 2 Batteries
2-13
Chargers for smaller Isco batteries are not recommended for the
Model 948, as they will take too long to recharge the battery. Note
the nylon webbed strap around the battery case. Its purpose is to
keep the case closed, not a carrying handle. Carry the battery
case by the handles molded into both narrow ends of the case.
Figure 2-4 Model 948 Battery Charger
2.5 Use of Other Types of
Batteries
In some circumstances, you may want to use batteries other than
the nickel-cadmium and gelled lead-acid types. For long-term
operation, the deep-cycle R-V or marine battery has been a
popular and satisfactory choice, due to its high ampere-hour
capacity and reasonable cost. In certain instances you can also
use alkaline (non-rechargeable) batteries with Isco equipment.
However, you should consider the environmental impact of
alkaline batteries because of the one-time-only use and necessity
of disposal of the spent batteries.
2.5.1 Alkaline
(Nonrechargeable)
Batteries
Generally, you should only consider alkaline batteries where
power consumption by the equipment is extremely low and long
periods of unsupervised operation are required. The samplers
cannot use alkaline batteries, due to power requirements, and
their use with flow meters is not recommended. One application
where alkaline batteries are suitable is the 4100 series flow
loggers. The flow loggers use two, 6-volt “lantern” batteries.
2.5.2 Deep-Cycle R-V or
Marine Batteries
Similar in appearance and construction to an automotive battery,
but specially designed to withstand deep discharges, the
deep-cycle R-V or marine battery works with Isco samplers, flow
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