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The load principle

Contrary to battery chargers with U/I characteristic, the charge with
constant current takes place with this equipment. Thus the charge
takes place substantially faster, because batteries up to the load end
to be loaded with that max. current. In addition the accumulators are
loaded to 100 %. Controlled gassing is desired thereby since it extends a forming of
sulfate layers substantially affected and thus the accumulator life.

Up to a tension of 14,7 V the accumulator will be loaded with the max. current.
Afterwards the equipment changes 1 hr. in the timer mode and
the battery with constantly sinking river is loaded. After approx.. 1
hr. changes the equipment in the stand-by-mode and the
preservation charge with 13,8 V is automatically introduced. This
clarifies following graphics.

Also to the loading suitably by lead gel batteries.

Security
Of course the equipment is short-circuit and polarity safe.