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e300i User Manual
Approval:
6 6 6 6 BATTERY CONSIDERATIONS
BATTERY CONSIDERATIONS
BATTERY CONSIDERATIONS
BATTERY CONSIDERATIONS
Batteries are available in many shapes, sizes and chemistry. Battery dealers will be pleased to
assist. The most common ones are reviewed below. In general, only "Deep cycle" batteries and
cells should be used and automotive or vehicle batteries will have a short life as they are not
designed for cyclic charging and discharging. A cell is a single unit of 2V and a battery consists of
a number of cells joined in series. The usual installation consists of 12V batteries arranged in series
or parallel, or both. Batteries should not be exposed to temperature extremes and good
ventilation is required as batteries can emit hydrogen while being charged.
The stored energy in a battery is given in Ampere Hours (Ah) or Watt hours (Wh). The capacity is
often based on a 10 hour discharge rate. A 100Ah battery will therefore supply a current of 5A
for 20hrs or 10A for 10hrs or 20A of current for 5hrs. It will not however supply 100A of current
for 1hr. There is much literature available on this subject. It is recommended that the e300
be charging at least 200Ah of battery capacity for a 12V system.
6 6 6 6 .1 Lead Acid Batteries.
.1 Lead Acid Batteries.
.1 Lead Acid Batteries.
.1 Lead Acid Batteries.
These are the most popular choice of battery type and can be vented/flooded (Water may be
added), or semi-sealed or low maintenance (Water cannot be added). Charging voltage is
typically 13.8-14.0 / 27.6-28.0Vdc for these batteries.
6 6 6 6 .2 Sealed Gel Batteries
.2 Sealed Gel Batteries
.2 Sealed Gel Batteries
.2 Sealed Gel Batteries
Sealed gel batteries are more expensive but offer clean and safer operation as no acid can be
spilled. Since they are sealed, they must never be boosted and the charging voltage is important.
Charging voltage is typically 14.0 / 28.0Vdc. Consult your battery supplier.
6 6 6 6 .3 Ni
.3 Ni- - - - Cad Batteries
.3 Ni
.3 Ni
Cad Batteries
Cad Batteries
Cad Batteries
This type of battery is traditionally used where large currents must be delivered and where deep
cycling is required. They are however relatively expensive. Consult your battery supplier for
details.
6 6 6 6 .4 Temperature Compensation
.4 Temperature Compensation
.4 Temperature Compensation
.4 Temperature Compensation
Much has been documented on this subject and there are certain merits. Generally, lower and
higher ambient temperatures allow higher and lower charging voltages respectively. K1000
regulators do not have this facility. Batteries should be sited in a cool area and temperature
compensation is only useful in extreme temperature variations.
Document #: 0503M01A
Date: March '08
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