Table of Contents
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Contents
1. Construction of Sealed lead acid batteries
2. Reactions of Sealed lead acid batteries
3. Sealed lead acid batteries characteristics
3.1 Battery capacity
3.2 Battery voltage
3.3 Battery self discharge
3.4 Battery internal resistance
3.5 Battery life
4. Operation of sealed lead acid batteries
4.1 Preparation prior to operation
4.2 Charging methods for standby use batteries
4.3 Charging methods for cyclic use batteries
4.4 Discharge protection of batteries
4.5 Equalization charging
4.6 Thermal runaway phenomena
5. Maintenance of sealed lead acid batteries
5.1 The storage and maintenance of batteries
5.2 The detection and remedy of "defective" batteries
5.3 The recycling of batteries
DYNAMIS Batterien GmbH
Tel. +49 7735 93669-0
info@dynamis-batterien.de
Sealed Lead Acid Batteries
Technical Manual
Brühlstr. 15 D-78465 Dettingen / Konstanz
Fax +49 7735 93669-91
www.dynamis-batterien.de
04.12.2006
Page 1 of 15
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Table of Contents
Summary of Contents for Dynamis lead-line
- Page 1 5. Maintenance of sealed lead acid batteries 5.1 The storage and maintenance of batteries 5.2 The detection and remedy of "defective" batteries 5.3 The recycling of batteries DYNAMIS Batterien GmbH Brühlstr. 15 D-78465 Dettingen / Konstanz Tel. +49 7735 93669-0 Fax +49 7735 93669-91 04.12.2006...
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Page 2: Construction Of Sealed Lead Acid Batteries
Case: A container made of ABS plastics, which is filled with plates group and electrolyte. Terminal Safety Valve Negative Plate Saparator Positive Plate Case DYNAMIS Batterien GmbH Brühlstr. 15 D-78465 Dettingen / Konstanz Tel. +49 7735 93669-0 Fax +49 7735 93669-91 04.12.2006 Page 2 of 15 info@dynamis-batterien.de www.dynamis-batterien.de... -
Page 3: Reactions Of Sealed Lead Acid Batteries
With very little gas evolution, the water loss of VRLA battery is minimized. DYNAMIS Batterien GmbH Brühlstr. 15 D-78465 Dettingen / Konstanz Tel. +49 7735 93669-0 Fax +49 7735 93669-91 04.12.2006... -
Page 4: Sealed Lead Acid Batteries Characteristics
The battery capacity may be also expressed by discharge power (Watt), which is the available discharge power within 15 minutes. DYNAMIS Batterien GmbH Brühlstr. 15 D-78465 Dettingen / Konstanz Tel. +49 7735 93669-0 Fax +49 7735 93669-91 04.12.2006... -
Page 5: Battery Voltage
Batteries will lose capacity due to self-discharge through packing, transportation and storage process at various temperatures. The relation between battery capacity and storage temperature and time is as follows: DYNAMIS Batterien GmbH Brühlstr. 15 D-78465 Dettingen / Konstanz Tel. +49 7735 93669-0 Fax +49 7735 93669-91 04.12.2006... -
Page 6: Battery Internal Resistance
3.4 Battery Internal Resistance As the capacity of lead acid battery decreased or the battery is aged, its internal resistance will be increased. Therefore, the internal resistance data DYNAMIS Batterien GmbH Brühlstr. 15 D-78465 Dettingen / Konstanz Tel. +49 7735 93669-0 Fax +49 7735 93669-91 04.12.2006... -
Page 7: Battery Life
Standby use battery life: 3 ~ 5 years under 2.3Vpc and 25°C floating charge condition. Cycle use battery life: 200 cycles (100%DOD) 225 cycles (80%DOD) 500 cycles (50%DOD) DYNAMIS Batterien GmbH Brühlstr. 15 D-78465 Dettingen / Konstanz Tel. +49 7735 93669-0 Fax +49 7735 93669-91 04.12.2006 Page 7 of 15 info@dynamis-batterien.de... -
Page 8: Operation Of Sealed Lead Acid Batteries
Standby batteries are continuously overcharged at a voltage only slightly above their open circuit voltage, called float voltage. The low float voltage DYNAMIS Batterien GmbH Brühlstr. 15 D-78465 Dettingen / Konstanz Tel. +49 7735 93669-0 Fax +49 7735 93669-91 04.12.2006... -
Page 9: Charging Methods For Cyclic Use Batteries
The popular charging method for VRLA battery is the constant current/ constant voltage (CICV) charging mode. In the first stage, the constant current (0.1C~0.3C) charging is performed before reaching the voltage limit. DYNAMIS Batterien GmbH Brühlstr. 15 D-78465 Dettingen / Konstanz Tel. +49 7735 93669-0 Fax +49 7735 93669-91 04.12.2006... - Page 10 2.65 ~ 2.75V/cell. The voltage of the final stage may seem too high, however, with the small current and short duration restriction, the negative effect on the battery is minimized. DYNAMIS Batterien GmbH Brühlstr. 15 D-78465 Dettingen / Konstanz Tel. +49 7735 93669-0 Fax +49 7735 93669-91 04.12.2006...
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Page 11: Discharge Protection Of Batteries
A two-stage constant current charging is suggested. The first stage is the charging with 0.3CA constant current to 2.4V/cell. The second stage is the charging with 20-hour rate (C/20 Amp) DYNAMIS Batterien GmbH Brühlstr. 15 D-78465 Dettingen / Konstanz Tel. +49 7735 93669-0 Fax +49 7735 93669-91 04.12.2006... -
Page 12: Thermal Runaway Phenomena
Always avoid the local overheating of batteries. Be equipped with heat dissipating devices or temperature sensors in order to stop charging when necessary. DYNAMIS Batterien GmbH Brühlstr. 15 D-78465 Dettingen / Konstanz Tel. +49 7735 93669-0 Fax +49 7735 93669-91 04.12.2006... -
Page 13: Maintenance Of Sealed Lead Acid Batteries
OCV is below 1.93Vpc, or 5.79V(for 6V battery), or 11.58V(for 12V battery), this battery is a defective battery due to over-discharging or some kind of deterioration. This kind of battery has permanent damage even after recharge. DYNAMIS Batterien GmbH Brühlstr. 15 D-78465 Dettingen / Konstanz Tel. +49 7735 93669-0 Fax +49 7735 93669-91 04.12.2006... -
Page 14: The Recycling Of Batteries
Batteries with terminals not insulated may cause danger of explosion or fire. It is lawful for people to return the scrap batteries to the sale store for recycling. DYNAMIS Batterien GmbH Brühlstr. 15 D-78465 Dettingen / Konstanz Tel. +49 7735 93669-0 Fax +49 7735 93669-91 04.12.2006... - Page 15 DYNAMIS Batterien GmbH Brühlstr. 15 D-78465 Dettingen / Konstanz Tel. +49 7735 93669-0 Fax +49 7735 93669-91 04.12.2006 Page 15 of 15 info@dynamis-batterien.de www.dynamis-batterien.de...
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