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A Few Words about Batteries…
Your Roberts Opus radio has been designed to use a choice of power
sources. You may plug it into the mains using the supplied adaptor,
or for listening away from the mains you may use either alkaline or
rechargeable batteries. We do not recommend the use of carbon-zinc or
zinc-chloride batteries.
It is very important that you read the advice and warnings given
below.
1) Whichever type of batteries you choose to use, it is very important
that the battery selection switch under the cover is set to the correct
type.
a. If no batteries are fitted, then set the switch to the Alkaline position
(up). This position minimises the power consumption when the radio
is powered from the mains.
b. If Alkaline batteries are fitted, then set the switch to the Alkaline
position (up).
c. If Rechargeable batteries are fitted, then set the switch to the NiMH
position (down). Your radio is designed to use Nickel-Metal-Hydride
rechargeable batteries. No other type of rechargeable battery should
be used in the radio.
2)
NEVER
mix old and new Alkaline batteries. The old batteries may
suffer damage and leak which will damage your radio and whatever
the radio is standing on.
3)
NEVER
mix old and new Rechargeable batteries. This may
result in unreliable charging and shortened battery life. Never mix
Rechargeable batteries of different types or capacities even if they
are new.
4)
NEVER
mix Alkaline and Rechargeable batteries. The recharging of
Alkaline batteries can be very dangerous.
Caution:
Replace batteries only with the same or equivalent type.
Danger of explosion if the batteries are incorrectly replaced.
Rechargeable batteries
Your Opus radio uses a range of methods to ensure correct and safe
charging of Rechargeable Nickel-Metal-Hydride batteries. These work
to protect your batteries from excessive charge and discharge. These
protections can only work properly if the advice above is followed. In
particular, the radio will not be able to correctly charge batteries if they
are a mixture of different brands, or different ages, or different capacities.
We recommend that all the rechargeable batteries used in your radio
are bought together as a set. They should always be charged together
and discharged together and not “borrowed” from time to time for other
applications. This will ensure that they give their optimum performance
in your radio.
We recommend that the rechargeable batteries that you use should
be from a quality brand, and should be of at least 2500mAh capacity.
Batteries of this capacity should be able to power your radio for between
15 and 25 hours depending upon the volume of the radio, operating
mode and also depending on the condition of the batteries.
Before you first install a new set of rechargeable batteries into your
radio you should first make sure that the battery type switch beneath
the battery cover is in the NiMH position (down). Install the batteries
arranging them
Plug the mains adaptor into a mains socket and then into the radio. The
charging indicator will show on the display,
The time taken to charge the batteries will depend on how much charging
they require. New batteries may be partly charged when first fitted, but
it is normal for a set of batteries to take several hours to charge fully.
Typically this can be between 6 and 10 hours depending on the battery
capacity and their initial state of charge.
