User Manual

General Use Best Practices
Safety is Your Responsibility! Keep
sparks, flames and cigarettes away from
batteries at all times. Maintain good
ventilation when working on or charging
batteries. Do not tamper with vent structures. Optimize
battery life by limiting duty cycle depth of discharge to
75% or less.
Charging service must be performed with equipment
configured to support the charging recommendations herein.
Opportunity charging service can be performed when
batteries are no more than 50% discharged. Batteries must
be fully recharged after the termination of duty cycle usage.
Operation, Charging
& Maintenance Best
Practices
Care & Maintenance
Keep batteries and terminal connections clean, dry and
free of dirt and corrosion. Check battery connections
and cables. Re-torque connections and replace any torn
or damaged cabling or connectors. Avoid thermal shock
to batteries by never spraying batteries with pressurized
water from a hose or pressure jet. Charge batteries after
the completion of work or duty cycle – never leaving
batteries in a discharged state.
Renewable Power Battery Charging
System Voltage
Voltage Setting VPC 12 Volts 24 Volts 48 Volts
Bulk 2.44 14.64 29.28 58.56
Absorption 2.42 14.52 29.04 58.08
Float 2.20 13.20 26.40 52.80
Temperature Correction: + / - 3 mV / C°
Cyclic Charging – Constant Voltage Charging
Mode 6 Volt 8 Volt 12 Volt
Cycle Charge: 7.20 – 7.41 9.60 – 9.88 14.40 – 14.82
Float Charge: 6.60 8.80 13.20
Recommended Current: 10% of C/20 Rating
Maximum Current: 25% of C/20 Rating
Temperature Correction: + / - 3 mV / C°
Effect of Ambient Temperature on
Battery Performance & Life
Battery capacities and projected life are based
upon operating temperatures of 80°F / 27°C.
Temperature increases of 15°F / 10°C over the
baseline will cause the rate of internal chemical
reactions to double – something that will reduce battery life
due to accelerated deterioration of internal components.
Corresponding reductions in operating temperatures will
create a reverse effect – extending life – however with a
reduced efficiency as temperatures decrease. Contact Crown
Battery to discuss any minimal requirements for battery life
and performance.
When to Charge?
Batteries should be fully recharged after each discharge event.
To optimize battery life, charge batteries after they have been
discharged for 25% of their specified running time (example –
charging batteries with an application specification of 2 hours
running time after 30 minutes of use). When charging batteries
following the completion of a duty cycle – connect the charger
to the battery pack and allow the equipment to operate until
charging is terminated and the charger automatically powers off.
“Opportunity Charging” is a concept that recharges batteries
at every opportune time possible (operator breaks, scheduled
machine downtime, etc). Opportunity charging service can be
performed when batteries are no more than 50% discharged.
Batteries must be fully recharged after the completion of work
or duty cycle.
Charging Service – EV, Motive Powered
& Renewable Energy Applications
Effective charging service delivers optimal
life and a strong return on investment
for AGM battery users. Use charging
equipment that has been configured for
application with AGM batteries; do not
use chargers that are configured for GEL
battery service as they will undercharge batteries and cause
premature failure. Certain Flooded Lead Battery chargers are
properly configured to recharge AGM batteries.
If you require support with verifying your charger’s
capabilities, contact Crown Battery via email at
[e-mail] (providing the make
and model of the charger).