2N Lift emergency phone 2N LiftNet - Manual, 1446 v1.8.3 - Manual (Page 85)

Battery Maintenance 5.1
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batteries will discharge. Do not forget to recharge them as soon as possible, or
– preferably – disconnect the green connector if you do not need to have the
system on.
Battery Pack Replacement
Battery Pack Service Life
 The warranty period does not apply to common wear and tear, i.e. the battery
depreciation. If, however, the product is used normally, the battery service
life is substantially higher than the warranty period.
 LN monitors the battery pack status and indicates the need of replacement
upon a certain capacity drop.
 Where the dispatching office is equipped with the 2N ® LiftManager software,
this information is automatically transmitted as an error message.
For replacement, four new Ni-MH accumulators of size AA and minimum capacity of
2000 mAh are needed. Make sure that accumulators of the same type and production
series are used. You are recommended to use the batteries delivered in groups of four
by the manufacturer. The recommended type is SANYO Eneloop 2000.
How to Replace a Battery
Instructions
1. Disconnect all supply cables from the CU.
2. Release the 6 screws on the CU bottom and remove the cover.
3. Replace the batteries and check polarity (the spring holder contact = minus
pole of the cell, i.e. its flat end).
4. Replace the cover and tighten the screws into position.
5. Dispose of used battery packs in accordance with the applicable waste law. You
can return them to the manufacturer too.