Samlex America PST-200S-24E - Manual (Page 19)

18 | SAMLEX AMERICA INC. SAMLEX AMERICA INC. | 19
seCtIOn 7 | General Information on Batteries for
Powering Inverters
Fig. 7.1: Charging / Discharging Curves for 12 V Lead Acid Battery
tABLe 7.3 BAtteRY cAPAcitY VeRSUS RAte oF DiScHARGe – c-RAte
c-Rate Discharge current Usable Capacity (%)
C/20 100%
C/10 87%
C/8 83%
C/6 75%
C/5 70%
C/3 60%
C/2 50%
1C 40%
12 Volt Lead-Acid Battery Chart - 80˚F
Battery V
oltage in VDC
Battery State of Charge in Percent (%)
0 10 20 30 40 50 60 70 80 90 100 110 120 130
16.5
16.0
15.5
15.0
14.5
14.0
13.5
13.0
12.5
12.0
11.5
11.0
10.5
10.0
9.5
9.0
C/5
C/40
C/20
C/10
DISCHARGE
CHARGE
C/20
C/3
C/5
C/10
C/100
Please note that X-axis shows %
State of Charge. State of Discharge
will be = 100% - % State of Charge.