03Battery Charging Tech Tips130011202019

MIDWESTWHEEL.COM IOWA MISSOURI DES MOINES 1436 E. Ovid Ave. office 515.265.1491 fax 515.265.4120 parts fax 800.314.4329 parts 800.888.0248 CEDAR RAPIDS 200 50th Ave. S.W. main 319.365.4453 fax 319.365.6327 parts fax 877.706.6085 parts 800.332.5435 DAVENPORT 8502 Northwest Blvd. main 563.322.2671 fax 563.322.5940 parts 800.553.1886 SIOUX CITY 1819 4th St. main 712.252.7969 fax 712.252.6149 parts 800.943.3534 CLEAR LAKE 840 Hwy. 18 W. main 641.357.7101 fax 641.357.8190 parts fax 800.548.9674 parts 800.397.5630 KANSAS CITY 5801 E. Front St. main 816.471.1552 fax 816.471.0813 parts 800.821.7402 TRUCK PARTS SUPER STORE TM GROUP 31 BATTERY RECHARGE TIMES Use With Flooded Batteries Only Use With AGM Batteries Only Recharge Time (Hours) Using Shop Charger for Single Battery OCV State of Charge Charger Maximum Rate 50 Amps 30 Amps 20 Amps 10 Amps 12.6V 100% READY TO USE 12.4V 75% 0.6 0.9 1.3 2.5 12.2V 50% 1.2 1.9 2.7 5.1 12.0V 25% 1.8 2.9 4.3 7.8 11.8V 0% 2.5 4.0 5.7 10.7 Recharge Time (Hours) Using Shop Charger for a Two Battery System OCV State of Charge Charger Maximum Rate 50 Amps 30 Amps 20 Amps 10 Amps 12.6V 100% READY TO USE 12.4V 75% 1.2 1.8 2.6 5.0 12.2V 50% 2.4 3.8 5.4 10.2 12.0V 25% 3.6 5.8 8.6 15.6 11.8V 0% 5.0 8.0 11.4 21.4 Recharge Time (Hours) Using Shop Charger for a Three Battery System OCV State of Charge Charger Maximum Rate 50 Amps 30 Amps 20 Amps 10 Amps 12.6V 100% READY TO USE 12.4V 75% 1.8 2.7 3.9 7.5 12.2V 50% 3.6 5.7 8.1 15.3 12.0V 25% 5.4 8.7 12.9 23.4 11.8V 0% 7.5 12.0 17.1 32.1 Recharge Time (Hours) Using Shop Charger for a Four Battery System OCV State of Charge Charger Maximum Rate 50 Amps 30 Amps 20 Amps 10 Amps 12.6V 100% READY TO USE 12.4V 75% 2.4 3.6 5.2 10.0 12.2V 50% 4.8 7.6 10.8 20.4 12.0V 25% 7.2 11.6 17.2 31.2 11.8V 0% 10.0 16.0 22.8 42.8 AGM 12 Volt State of Charge Charger Maximum Rate 50 Amps 30 Amps 20 Amps 10 Amps 12.8V 100% READY TO USE 12.6V 75% 36 min. 54 min. 78 min. 150 min. 12.3V 50% 72 min. 114 min. 155 min. 306 min. 12.0V 25% 108 min. 174 min. 258 min. 468 min. 11.8V 0% 150 min. 240 min. 342 min. 642 min. November 15, 2019 (03Battery Charging Tech Tips) AGM 12-VOLT BATTERY CHARGING CONSIDERATIONS: Ideal charging varies by application. Many common battery chargers are not fully compatible with AGM batteries, however; they will not ruin the battery if used a few times over the battery’s lifetime in a vehicle. Adversely, not all chargers are really AGM compatible and can do significant damage to an AGM battery. Large “wheeled chargers,” found in many shops, which exceed 15.4 volts must be avoided. In the rare occurrence that an AGM battery needs to be charged outside of the vehicle’s charging system, charging voltage should be 13.8 –14.8 @ 77°F (25°C). Not to exceed 30 AMPS. IMPORTANT: NEVER OVERCHARGE BATTERIES! EXCESSIVE CHARGING WILL SHORTEN BATTERY LIFE. * Charging time and efficiency depends upon battery age, temperature, capacity, and type of charger. A voltage-limited, AGM compatible charger that automatically terminates when battery is fully charged is highly recommended. NOTE: For multiple batteries in parallel, multiply by number of batteries