vrla batteries august 2005 valve-regulated lead acid batteries: individual data sheet this information is generally descriptive only and is not intended to make or imply any representation, guarantee or warranty w ith respect to any cells and batteries. cell and battery designs/specifications are subject to modification without notice. contact panasonic for the latest information. photo/label for reference only. for standby power supplies. expected trickle life: approx. 6 years at 25c, approx. 10 years at 20c. lc-x1228p/LC-X1228AP specifications characteristics dimensions (mm) discharge characteristics 77f (25c) (note) duration of discharge vs. discharge current (note) (note) the above characteristics data are average values obtained within three charge/discharge. cycles not the minimum values. terminal type: LC-X1228AP: m5 threaded post lc-x1228p: m5 bolt and nut (a) the photo and dimensions represent LC-X1228AP. battery case resin: standard (ul94hb) color is black. optional (ul94v-0) color is grey. 1 5 10 50 100 500 discharge current (a) 30 20 15 10 5 4 3 2 1.5 1 50 40 30 20 10 5 3 (minute) (hour) duration of discharge 104?f (40?c) 77?f (25?c) 32?f (0?c) 5?f (-15?c) 6.43 (163.4) 0.39 (9.8) 4.88 (124) 6.890 0.079 ( 1752) 0.33 (8.3) 0.09 (2.2) 0.47 (12) 4.921 0.079 ( 1252 ) 0.47 (12) 6.496 0.079 ( 1652) 5.28 (134) 3.54 (90) 1.79 (45.5) 13.5 13.0 12.5 12.0 11.5 11.0 10.5 10.0 9.5 9.0 8.5 8.0 0 1 2 4 6 8 10 20 40 60 2 4 6 8 10 20 40 56a 28a 7a 1.4a 14a 2.8a (minute) (hour) duration of discharge terminal voltage (v) ? please contact panasonic for availability on optional items. optional items may be subject to minimum order quantities. nominal voltage rated capacity (20 hour rate) 12v 28ah 6.496 inches (165 mm) 4.921 inches (125 mm) 7.07 inches (179.5 mm) LC-X1228AP 6.890 inches (175 mm) lc-x1228p 7.067 inches (179.5 mm) 24.34 lbs. (11 kg) lc-x1228p LC-X1228AP ? lc-p1228p ? lc-p1228ap dimensions standard terminals and resin optional terminals and resin length width height total height approx. mass ul94hb m5 bolt and nut ul94hb m5 threaded post ul94v-0 m5 bolt and nut ul94v-0 m5 threaded post capacity (note) 77?f (25?c) self discharge 77?f (25?c) 9.80a 102% 100% 85% 65% 20 hour rate (1.40a) 10 hour rate (2.65a) 5 hour rate (5.00a) 1 hour rate (21.0a) 1.5 hour rate discharge cut-off voltage 10.5 v 28.0ah 26.5ah 25.0ah 21.0ah internal resistance fully charged battery 77?f (25?c) residual capacity after standing 3 months residual capacity after standing 6 months residual capacity after standing 12 months 91% 82% 64% approx. 6.0m ? 4.20 a or smalle r initial current control voltage 13.6v to 13.8v (per 12v cell 25?c ) 104?f (40?c) 77?f (25?c) 32?f (0?c) 5?f (-15?c) temperature dependency of capacity (20 hour rate) charge method (constant voltage) trickle use
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