48V HP Range – O&M Manual v1
Operating & Maintenance Manual
48V HP Range
5
1. If not intending to use the battery for a prolonged period of time (one week or longer),
turn off the voltmeter by selecting ‘Meter Off’ on the red rocker switch. This will ensure
the voltmeter is isolated and not drawing a small current. If the voltmeter was left on,
then over weeks and months it would drain the battery and ultimately flatten it.
2. If the battery is unintentionally discharged flat then it can be recovered. First remove
all loads sources and switch off the LED voltmeter. Apply a ‘dumb’ charger which
charges the battery without needing to ‘see’ the battery first.
3. For long battery life, keep it charged at above 13V at all times. Check the battery once
a month. If the open circuit voltage has dropped to 13V or below, then give it a boost.
Ensure the voltmeter is turned off at the red rocker switch.
4. All batteries, whether they are lead acid or lithium degrade faster in extreme cold and
extreme hot environments.
a. Do not charge battery when the ambient temperature is less than zero or above
45
o
C.
b. Do not operate the battery in environments are -20
o
C or above 60
o
C. Doing so
would reduce its life expectancy.
8.0 FAQ
Will the battery be damaged if allowed to fully discharge?
Firstly, the BMS has a low voltage disconnect at around 10.5V, so the battery will never
discharge to zero volts. If the battery is flattened and cuts out at LVD at 10.5V then it can be
recovered without damage if on occasion. If it is done repeatedly then it will have a negative
impact on longevity.
Maintaining the battery charge at 13V or higher will maintain good battery life.
Look after your lithium battery and it will give you many years of service.
Can the battery be recovered from flat?
Yes. See Section 8.
Does the battery capacity degrade over time?
Yes, all batteries degrade slowly over time, even with no load sources connected. Storage
temperature is important to degradation. Roughly every 10
o
C above ambient 20
o
C doubles
the degradation rate. Cool ambient conditions are better as it slows down degradation rate.
9.0 Contact Us
Head Office & Manufacturing:
Address:
U16/20-22 Ellerslie Road, Meadowbrook, QLD 4131