LC-X1228P Panasonic - BSG, LC-X1228P Datasheet - Page 66

• Manufacturer Part Number: LC-X1228P
• Description: BATT SEALED LEAD ACID 12V 28AH
• Manufacturer: Panasonic - BSG
• Series: LCr

Specifications of LC-X1228P

• Voltage - Rated: 12V
• Capacity: 28Ah
• Size / Dimension: 6.47" L x 4.92" W x 6.89" H (165mm x 125mm x 175mm)
• Termination Style: Nut/Bolt, M5
• Rechargeability: Yes
• Weight: 25 lbs (11.3kg)
• For Use With: BVW122250003N - BATTERY CHG UNIV 12VDC @ 2.25A271-2390 - BATTERY CHG UNIV 12VDC @ 2.25A271-2386 - BATTERY CHG UNIV 12VDC @ 1.2A271-2385 - BATTERY CHG UNIV 12VDC @ 600MA271-2382 - BATTERY CHG UNIV 12VDC @ 500MA271-2381 - BATTERY CHG UNIV 12VDC @ 500MA271-2380 - BATTERY CHG 120VAC 12VDC @ 500MA271-2378 - BATTERY CHG 120VAC 12VDC @ 300MAPATC-08 - BATT CHARGER 12V 1.5A X 2 UNITPATC-03 - BATTERY CHARGER 12 VOLT 1.5 AMP
• Lead Free Status / RoHS Status: Contains lead / RoHS compliant by exemption
• Other names: LC-X1228; LC-XB1228; LC-XB1228P; LCX1228P; P049

GLOSSARY OF TERMS FOR VALVE-REGULATED LEAD-ACID BATTERIES - CONT.
STANDBY USE
General term of constant stand-by battery
systems. Batteries are kept charged by trickle/
float method at all times in preparation for
unforeseen power disruptions.
TEMPERATURE COMPENSATION
Compensation of charge voltage for temperature
variation of a cell/battery or in its vicinity.
Qualitatively, charge voltage should be corrected
to higher side for low temperatures and to lower
side for high temperatures.
TERMINAL VOLTAGE AT DISCHARGE
The voltage of a battery during discharging.
THERMAL RUNAWAY
Such phenomena as an excessively high set-up
voltage in constant-voltage charging of a battery
and a very high battery temperature cause
charge current to increase, which then raises
the temperature further: this vicious cycle is
called thermal runaway, which may, in the worst
case, result in breakage of the battery due to
heat.
TRICKLE CHARGE
To charge a battery in the state of disconnection
from the load to compensate for its self
discharge.
TRICKLE LIFE
The service life of a battery in the trickle use.
Usually, the trickle life is the time expressed in
years before the dischargeable time of the
battery decreases to a half of the initial value.
UL
Abbreviation of Underwriters Laboratories Inc. in
USA. The UL establishes various safety
standards, and performs official recognition of
materials, parts and products.
UPS (Uninterruptible Power Supply)
Equipment or system which is automatically
connected to the load to supply power if the
main power fails.
VRLA BATTERIES PAGE 65
VALVE (ONE WAY VALVE)
A valve on each battery which automatically
releases gas from the battery when internal
pressure of the battery exceeds a predetermined
value: it prevents breakage of the battery due to
excessive internal pressure caused by the gas
generated by charging or other reasons. The valve
also serves to prevent outside air from entering
batteries.
VALVE-REGULATED LEAD ACID (VRLA)
Valve-regulated (sometimes referred to as sealed,
although it is technically incorrect) lead-acid
batteries operate with the principle of gas
recombination and immobilized electrolyte. The
gases that are produced during normal operation
are recombined in the battery reducing water loss.
When pressure in the battery builds up, the valve
opens at a predetermined value venting the gases
and then reseals before battery pressure reaches
atmospheric pressure.
AUGUST 2003