for pitch backup systems in wind turbines expected life: 10 years at 20 , 5 years at 25 (based on a weekly discharge cycle of max 15 seconds) dimensions ( mm ) s p ecification duration of discharge vs. discharge curren t characteristics lar g e current dischar g e characteristics ( 25 ) peak current(a for milliseconds) 267 250 233 217 200 187 175 157 143 133 125 discharge current(a) 240 225 210 195 180 168 158 142 130 120 113 discharge time(sec) 3 6 10 15 20 25 30 40 50 60 70 peak current(a for milliseconds) 117 110 103 98 92 87 82 77 73 70 67 discharge current(a) 105 100 93 88 83 78 73 70 67 63 60 discharge time(sec) 80 90 100 110 120 130 140 150 160 170 180 the cut off voltage should be more than 8.0v. battery should be charged after each discharge. char g in g method **please consult us for the right control voltage if the ambient temperature is different. o p eratin g tem p erature ran g e * for storage, please ensure that battery is fully charged. data in this sheet are for reference only and are not guaranteed values. -40 ~ 50 charge -20 ~ 50 discharge -20 ~ 50 *storage **control voltage: 13.6v~13.8v at 20 ~25 with temperature compensation, initial current: 1.80a or smaller contents indicated (including the recycle marking, etc) are subject to change without notice. battery case resin: flame-retardant (ul94v-0) 12ah 20 hour rate 12ah 151 mm total height width LC-WTP1212 94 mm 100 mm length approx. mass terminal nominal voltage 12v rated capacity(20hr) 3.85 kg dimensions height 98 mm 85% 0 100% 25 10 hour rate after 12 months after 6 months 82% 91% self discharge (25 ) 64% after 3 months 65% -15 capacity (25 ) temperature dependency of capacity (20 hour rate) 40 15 m ? internal resistance 102% 1 hour rate 250m 8.1ah fully charged battery (25 ) 10ah 3 hour rate 9.3ah 0.1 0.3 1 31030 100 1 3 5 10 30 60 3 5 10 20 30 (minute) (hour) 40 25 0 -15 duration of discharge discharge current(a) 6.35 4.5 terminal t yp e ( o p tion ) 1/1 2009.06
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