Knowing some fundamentals about your battery pack will help to ensure that you maximise the life of the
packs. While li-ion battery packs are fairly robust, they are potentially susceptible to damage particularly from
severe impact, temperature and water ingression. Our lamps have been designed to best protect the battery
packs in operation, while maintaining a practical helmet mounted solution for underground use. If carrying
spare packs take care to avoid severe impact and water as they will potentially break. A hard case waterproof
container is probably advisable.
We do not take responsibility for injury to persons or damage to property from cells or chargers. These should
be used and charged under supervision, stored safely, appropriately maintained and correctly disposed of if
there is any suspicion that they have been damaged or are defective.
Battery Pack Charging
Although the charging algorithm for li-ion cells is relatively complex, this is sorted out by Nora chargers and
battery protection circuitry. Consequently, chargers are invariably simple plug in and go solutions. Red light
charging, green light fully charged, with automatic charging shut off. Battery packs can be part discharged or
part charged without consequence. There is fundamentally no rapid high current charge option for li-ion packs.
Although charging is automatically shut off on completion, it is always advisable to disconnect battery packs
from chargers when charging has finished.
Battery Pack Storage
The capacity of li-ion batteries is reduced with age. The chemical process that relates to this is accelerated
with increased temperature and charge level. To realise maximum battery life, cell packs should be stored
around half charge and in a cool and dry environment (around 15 degC, do not freeze). Under no
circumstances should battery packs be left discharged for an extended period, in order to avoid self discharge
below 2.5v and permanent damage.
Battery Compatibility
Nora3 operates from
3.7v li-ion
, and is compatible with 3 series NiMh / alkaline cells. Nora is not compatible
with high voltage li-ion packs, typically ranging from 7.4v to 14.8v, connection to which could result in damage.
Always ensure correct battery polarity, to avoid potential damage to lamp.
Battery Pack Summary
Avoid getting battery packs wet, it will kill them
Avoid severe impact. Do not puncture.
Store battery packs somewhere cool, around 15 degrees C
Store packs part charged, around 50% is good
Do not store packs discharged (as deep self discharge will kill them)*
Do not store packs connected to lamp
Use a Nora charger, or a suitable equivalent
Keep a watch on general battery pack condition (avoid damage to leads and connector)
Do not use or charge a potentially damaged battery pack
Dispose of dead battery packs at suitable recycling facility
Do not short circuit or reverse polarity batteries
Keep away from children and monkeys
