In mathematics, with Delta Δ differences are indicated. In this case, "Minus
Delta V" means a negative voltage difference. This charge identification
makes itself useful in the following effects: Should a rechargeable battery
be charged with a constant current, its voltage rises continuously. When a
rechargeable battery is full, its voltage reaches a maximum but falls again
slightly with further current flow. This light fall in voltage is recognised by
the charging electronics and the charge process is terminated. The product
automatically switches to "Retention charging". This means that the batteries
are no longer being loaded with constant current, instead, with short current
pulses. This counteracts the selfdischarge and the batteries are kept in a state
of full charge.
Timer control
In addition, this product has a timer control which automatically switches over
to retention charging after specified hours depend on input power as below:
With a suitable protection class II power supply (not provided) approved for
use with household product and has SELV output DC 5 V, max. 2 A:
AA: 7.5 hours; AAA: 6.5 hours
With a suitable protection class II power supply (not provided) approved for
use with household product and has SELV output DC 5 V, 1 A:
AA: 13.5 hours; AAA: 6.5 hours
This serves as an additional protection against overcharging should the
charge termination not respond due to a possibly defective rechargeable
battery.
Cleaning and care
DANGER! Always remove the power cable before cleaning the
product. There is the risk of an electric shock!
When you are cleaning the product ensure that no moisture gets inside it,
so as to avoid irreparable damage to it.
GB/IE/NI
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