Page 465 - Battery Reference Book

46/4 Voltage-limited taper current charging of alkaline manganese dioxide batteries

18 - r
End-of-charge voltage 1.2 n
17-
16 - 130 V ax.

A 15 - \120 v ax.
L
0 14-
+- -
0.8
E

io 20 30 40 50
Number of cycles
Figure 46.1 Typical voltage performance on voltage-limited taper
current charge of an Eveready 561 154 rechargeable alkaline Battery voltage (V)
manganese dioxide battery. Discharge cycle, 4 h through 9.6 a;
charge cycle, voltage-limited taper current charging for 16 h, Figure 46.3 Suggested and actual linear taper currents obtained
voltage limit 17.5V, filtered regulated power supply, 1 % regulation during 16h voltage-limited taper current charging of 15V, 5Ah
with 4,OQ limiting resistor (Courtesy of Union Carbide) Eveready 561 alkaline manganese dioxide battery (Courtesy of
Union Carbide)
near 1 A, the battefy voltage will fall to the indicated
initial closed-circuit values within 5 min. battery in 16 h. A tapered charging current is supplied
Figure 46.2 shows a voltage-limited taper current to the battery through the series current-limiting
charge circuit suitable for recharging a 15V, 5Ah resistor Rq, as battery voltage increases with charge.

T.

120

UCC Patent 3 281 639

Stancor RT 201 (input a.c. to terminals 1 and 7; connect terminals 3 and 6)
(secondary connections to bridge 8 and 11: connect terminals 9 and 10)
2A50 Solitron devices, Inc. (or equivalent)
500 pF 50 V d.c.
1/4 M12 2 (Motorola) in 9636 TI or Int. Rec.
2N1304 RCA, TI or equivalent
2N1557 Motorola, 2N514 TI
4700 52. 112 W
390 n. 112 W
1000 52, 1 w
452,iow

Figure 46.2 Voltage-limited taper current charger circuit suitable for charging a 15V, 5Ah Eveready 561 alkaline manganese dioxide
battery in 16 h (Courtesy of Union Carbide)