LC-X1228P Panasonic - BSG, LC-X1228P Datasheet - Page 64

• 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.
DISCHARGE RATE
The term to express the magnitude of discharge
current. When assuming discharge current and
time to discharge cut-off voltage t hours, this
discharge is called t hour rate (tHR) discharge,
and the current is called t-hour rate discharge
current. When time t is minutes instead of hours,
tMR is used.
DUTY CYCLE TEST
Test of batteries in ordinary use including charge,
discharge and rest.
ELECTROLYTE
The medium which serves to conduct ions in the
electrochemical reactions in batteries. The lead-
acid battery adopts diluted sulfuric acid as the
electrolyte.
ENERGY DENSITY
Energy available per unit Approx. mass or unit
volume of a cell/ battery. Energy density is
expressed in Wh/ kg or Wh/l.
FLOAT CHARGE
The system in which a constant voltage is
continuously applied to a battery connected to a
rectifier in parallel with a load to maintain the
battery in charged state: on occurrence of power
failure or load variation, the battery supplies
power to the load without any short break.
GAS RECOMBINATION ABILITY
Capability of a battery to recombine (or absorb)
internally generated oxygen gas at the negative
plate. The greater this capability is, the larger the
available charge current.
HIGH RATE DISCHARGE
A very rapid discharge of a battery. (In many
cases it means discharging at approx. 1 CA or
higher rate.)
INTERNAL PRESSURE
The pressure within a sealed battery. Internal
pressure of a battery is increased by oxygen gas
which is generated from the positive plate at the
end of charging.
VRLA BATTERIES PAGE 63
INTERNAL RESISTANCE
The resistance within a battery: it is the total of
individual resistances of the electrolyte and the
positive and negative plates. Internal resistance
is simply measured with the current four-
terminal method (1,000 Hz) and expressed in
the composite value of resistance component
and capacitor component.
INTERNAL SHORT-CIRCUIT
Touching of the positive and negative plates
within a cell.
LIFE
The time period until a cell/battery loses its
expected characteristics.
LOW MAINTENANCE
Low maintenance means that no watering nor
equalizing charge is required in operating
batteries.
LOW-VOLTAGE CUT-OFF
A circuitry designed to discontinue discharge of
a battery at a predetermined voltage level.
MALE TAB
The metallic pieces which are attached to a
VRLA battery as the terminals.
MEMORY EFFECT
A phenomenon where a temporary drop of
discharge voltage is observed during deep
discharge of an alkaline rechargeable battery
which has been subjected to shallow charge/
discharge. Cycles or trickle charging over long
time.
NEGATIVE PLATE
The battery electrode into which a current from
the external circuit flows during discharging.
The negative plate has lower electric potential
than the positive plate to the electrolyte. The
negative plate is incorporated with connection
parts such as the electrode pole.
RATED CAPACITY
A nominal value of capacity of a cell/battery,
which is a measure of electric capability. Rated
capacity is rather approximate compared with
rated capacity.
AUGUST 2003