0859-0012 EnerSys, 0859-0012 Datasheet - Page 10

• Manufacturer Part Number: 0859-0012
• Description: BATT CYCLON SLA 6V 8.0AH
• Manufacturer: EnerSys
• Series: Cyclon®r
• Type: Sealed Lead Acid Batteriesr

Specifications of 0859-0012

• Voltage - Rated: 6V
• Capacity: 8.0Ah
• Size / Dimension: 5.48" Dia x 2.13" H (139.2mm x 54.1mm)
• Termination Style: Spade, .250" (6.3mm)
• Rechargeability: Yes
• Weight: 3.2 lbs (1.5kg)
• Output Voltage: 6 V
• Chemistry: Lead Acid
• Rechargeable/non-rechargeable: Rechargeable
• Battery Capacity: 8 Ah
• For Use With: BVW063800003N - BATTERY CHG UNIV 6VDC @ 3.8A271-2389 - BATTERY CHG UNIV 6VDC @ 3.8A271-2384 - BATTERY CHG UNIV 6VDC @ 2A271-2383 - BATTERY CHG UNIV 6VDC @ 1A271-2379 - BATTERY CHG 120VAC 6VDC @ 600MA271-2377 - BATTERY CHG 120VAC 6VDC @ 400MAPATC-01 - BATTERY CHARGER 6 VOLT 1.5 AMP
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption
• Other names: 842-1011

10
Figure 4-1: CYCLON
Voltage Profile
Figure 4-2: CYCLON
4.3 Discharge Level
The voltage point at which 100% of the usable capacity
has been depleted is a function of the discharge rate. For
optimum cell life, it is recommended that the battery be
disconnected from the load at this end voltage point. The
recommended end of discharge voltage (EODV) is a function
of the rate of discharge, and these numbers are given in
Table 4-1 below:
Table 4-1
NOTE: Discharging a CYCLON
www.enersys.com
2.3
2.2
2.1
1.9
1.8
1.7
1.6
1.5
1.4
Discharge rate in amps
0.05C
0.10C
0.20C
0.40C
1.00C
2.00C
>5.00C
2.3
2.2
2.1
1.9
1.8
1.7
1.6
2
2
levels or leaving the cell connected to a load in a discharged
state may impair the ability of the cell to accept a charge.
0
0
10
10
10
10
10
10
10
5
1
(C
(C
(C
(C
10
10
10
10
10
/20)
/10)
/5)
/2.5)
2
Time in minutes at 25°C (77°F)
3
15
®
®
Time in hours at 25°C (77°F)
Battery Medium Rate Discharge
Battery High Rate Voltage Profile
4
20
®
battery cell below these voltage
5
25
6
30
1C
C/5
Suggested minimum
7
35
EODV per cell
8
1.75V
1.70V
1.67V
1.65V
1.60V
1.55V
1.50V
40
9
45
2.2C
10
C/10
50
11
55
12
In "overdischarge" conditions, the sulfuric acid electrolyte
can be depleted of the sulfate ion and essentially become
water, which can create several problems. A lack of sulfate
ions as charge conductors will cause the cell impedance to
appear high and little charge current to flow. Longer charge
time or alteration of charge voltage may be required before
normal charging can resume.
Disconnecting the battery from the load will totally eliminate
the possibility of an overdischarge, provided that it is put
back on recharge immediately after the discharge. Doing so
will allow each cell to provide its full cycle life and charge
capabilities.
It is important to note that when the load is removed
from the battery, its terminal voltage will increase - up to
approximately 2 volts per cell. Because of this phenomenon,
some hysteresis must be designed into the battery
disconnect circuit so that the load is not continuously
reapplied to the battery as the battery voltage recovers.
4.4 Overdischarge Recovery
Although overdischarging the battery is not recommended,
CYCLON
of abuse. The following protocol may be used to recover
cells that have been overdischarged. This procedure should
not be attempted if the OCV of the battery pack is 1.0 volt
per cell (VPC) or less.
1. Bring the battery to room temperature (77ºF or 25ºC).
2. Measure the OCV. Continue to step 3 if it is at least 1.00
3. Charge the battery using a 0.05C constant current
4. Allow the charged battery to stand on open circuit
5. Perform a capacity test on the battery and record the
6. Repeat steps (3) to (5). The capacity returned in step 5 is
7. Repeat steps (3) to (5) to get Cycle 3 capacity. Proceed
8. If Cycle 3 capacity equals or exceeds Cycle 2 capacity
VPC; otherwise terminate the procedure and reject the
battery.
for 24 hours. The charger should be able to provide a
driving voltage as high as 3.0 VPC. Monitor the battery
temperature; discontinue charging if the battery
temperature rises by more than 20ºC.
for 18 hours.
amp-hours delivered. The longer the discharge the more
reliable the result. This is Cycle 1.
now Cycle 2. If Cycle 2 capacity is greater than Cycle 1
capacity proceed to step 7; otherwise reject the battery.
to step 8 if Cycle 3 capacity is equal to or more than
Cycle 2 capacity. Reject the battery if Cycle 3 capacity
is less than Cycle 2 capacity.
recharge the battery and put it back in service.
®
batteries have an excellent tolerance for this type
Publication No: US-CYC-AM-007 - April 2008