Page 549 - Battery Reference Book

50/32 Lead-acid (secondary) batteries

Table 50.28 Gelyte sealed lead-acid batteries available from SAFT
Model Nominal Nominal Length Width Height Weight
voltage capacity (mm) (mm) (mm) (kg)
(V) (Ah)
20 h rate
SA-2300 2 30.0 46.3 58.4 144.0 1.90
SA-480 4 8.0 103.1 51.1 94.7 1.09
SA-626 6 2.6 134.6 35.1 59.7 0.64
SA-645 6 4.5 67.1 67.1 97.5 0.86
SA-645L 6 4.5 67.1 67.1 96.3 0.86
SA-660 6 6.0 70.6 70.6 99.7 1.04
SA-680 6 8.0 151.9 51.1 144.0 1.63
SA-690 6 9 .O 96.3 58.4 144.0 1.68
SA-6100 6 10.0 96.3 58.4 145.0 1.90
SA-6180 6 18.0 192.5 58.4 145.0 3.36
SA-6200 6 20.0 192.5 58.4 145.0 3.81
SA-6270 6 27.0 175.3 96.3 145.0 5.03
SA-6300 6 30.0 175.3 96.3 145.0 5.71
SA-1226 12 2.6 134.9 35.1 125.7 1.27
SA-1260 12 6.0 141.2 70.6 97.8 2.09
SA-1290 12 9.0 192.5 58.4 145.0 3.36
SA-12100 12 10.0 192.5 58.4 145.0 3.81
SA- 12 180 12 18.0 192.5 116.8 145.0 6.71
SA-12200 12 20.0 192.5 116.8 145.0 7.62
SA-12270 12 27.0 192.5 175.2 195.0 10.07
SA-12300 12 30.0 192.5 175.2 145.0 11.43
SA-24100 24 10.0 192.5 116.8 145.0 7.62

Table 50.29 Fully recombining sealed lead-acid batteries from GEC
D X BC

Nominal voltage (V) 2.0 2.0 2.0
Capacity rating (Ah)
10h rate 2.5 (250mA) 5.0 (500mA) 25 (2.5A)
1 h rate 2.8 (2.5A) 3.2 (5A) 20 (25 A)
Peak power rating (W) 135 (at 135A) 200 (at 200A) 600 (at 600A)
Internal resistance (x10-3 Q) 10 6 2.2
Diameter (mm) 34.2 44.4 65.7
Height (mm) 67.6 80.6 176.5
Weight (kg) 0.181 1.369 1.67

50.5 Spillproof lead-acid batteries
Several manufacturers supply small lead-acid bat-
teries which, although not sealed, are specifically
U 0.25 A designed to be spillproof. Thus, although these bat-
teries will require topping up with electrolyte during
their life, they have specific advantages in the field of
portable battery-operated equipment.

50.5.1 Sonnenschein
0 1 .o 2.0 3.0 Sonnenschein manufacture a wide range of spill-proof
Discharged capacity (A h) accumulators designed for use with photo-flash equip-
ment and other portable units. These batteries are
Figure 50.13 Typical discharge curves at various discharge rates housed in a tough transparent plastics case and feature
(constant load) for a General Electric D cell under standard a labyrinth-like construction below the vent opening
conditions: charge 2.45V at 23°C for 16h, discharge at 23°C
to 1.4 V (Courtesy of General Electric) through which no acid will pass even with extreme