SDR Facility Solutions Coop Catalog - Page 801

Empower your Nilfisk
In order to ensure that your machine provides the best possible service, we recommend that
you always use our range of batteries in your equipment. The technology of our machines is
supplemented by batteries selected for their quality and durability, reliable operation and minimum
maintenance. The capacity of the batteries in our program is measured in A/h (Amperes per hour)
and is listed according to the European std. in A/5h.
Acid Batteries / WET batteries
The maintenance free batteries have some advantages compared
to a std. WET battery such as:
• No water refill
• Lower power consumption during charging
• No acid spill on the machine or in the charging room
• No gassing during charging – no special room needed
The WET batteries are lead sulphate batteries, and they are
made in a flat plate or tubular metal construction which are
soaked in a sulphuric acid solution which produces a chemical
reaction between the plates / tubes thus allowing the desired
voltage and capacity to be reached. The lifetime of WET / acid
batteries is measured in cycles. One cycle is equal to a full
discharge / charge sequence, the lifetime of WET / acid batteries
varies between 800 – 1500 cycles.
Maintenance free batteries are approximately 35-50 % more
expensive then standard WET batteries.
Semi Traction batteries are also available – these are WET / acid
batteries manufactured with a different technology and with less
cycles – typically 3-500 cycles.
WET / acid batteries release gas during the re-charging phase,
which is why they regularly need to be refilled with distilled
water. Charging of WET / acid batteries also needs to take place
in dedicated ventilated room.
GEL batteries / Maintenance free batteries
The maintenance free batteries are sealed valve regulated
batteries with the same dimensions as std. WET batteries,
but maintenance free batteries have less capacity per unit.
Maintenance free batteries can only be discharged down to
70% compared to a std. WET battery, which can be discharged
to 80%. This means that it is vital to be clear on the need when
choosing maintenance free batteries.
The lifespan of a battery
The lifespan of a battery is measured by charge and discharge
sequences – one charge and discharge is one cycle. It is
important to stress that the life span of all batteries are
shortened if the battery is not allowed to fully recharge after use
– i.e. if the battery is put to use before it is fully charged it will
be damaged.
The no. of cycles is an important quality indicator on all traction
batteries – the more cycles – the longer the life span. The
average level of cycles for a conventional battery in the market is
6-800 while all Nilfisk machines can be equipped with batteries
that considerably exceed the average of useful cycles.

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