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OPERATION – Model SF-1275-A
Two switches permit Battery Type and Charge Rate selection.
Switch #1 permits selection of either Conventional or Mainte-
nance Free and Deep Cycle batteries. If you are not sure of your
battery type, use the (Regular) Conventional Setting.
Switch #2 (3 Charge Rate Modes)
Mode 1 -- Select the 2 amp automatic setting for 12 volt smaller
(<31 AH (Ampere Hour)) or to warm larger lead-acid batteries.
Mode 2 -- Select 12 amp automatic for larger 12 volt batteries
for a faster charge.
Mode 3 -- Select 75 amp Engine Start to assist in engine crank-
ing of 12 volt systems. DO NOT use on 6 volt systems. Use the
75 amp engine start position for cranking automobiles or light
trucks. Use only with battery in the vehicle. This will reduce the
chance of damaging sensitive electronic equipment in the ve-
hicle.
BATTERY TYPE
▲
▲
CONVENTIONAL
AND LOW
MAINTENANCE
BATTERIES
MAINTENANCE
FREE AND
DEEP CYCLE
BATTERIES
CHARGE RATE
▲▲▲
2 AMP
10 AMP
(SWITCH #1)
(SWITCH #2)
50 AMP
ENGINE
START
DEEP CYCLE
BATTERIES
▲▲
CHARGE RATE
▲▲
BATTERY TYPE
REGULAR
BATTERIES
2 AMP
75 AMP
ENGINE START
12 AMP
▲
(SWITCH #2)(SWITCH #1)
MANUAL
AUTOMATIC FOR CONVENTIONAL
LOW MAINTENANCE BATTERIES
▲
▼
▼
CHARGE RATE
AUTOMATIC FOR
MAINTENANCE
FREE AND
DEEP CYCLE
BATTERIES
▲
2 AMP
10 AMP
▲
(SWITCH #1)
(SWITCH #2)
OPERATION – SF-520-MA
This charger has two switches.
Switch #1
Mode 1--Manual Position: Use for charging in 2 amp or 10 amp
Charge Rates on 12 volt batteries only. This charging must be
monitored and charging manually stopped when the battery is
charged. Overcharging will damage the battery.
Mode 2--Automatic Position for Conventional Batteries. If you
are not sure of your battery type, use the (Regular) Conven-
tional Setting.
Mode 3--Automatic Position for Maintenance Free and Deep
Cycle batteries.
Switch #2 (2 Charge Rate Modes)
Select either 2 amp Charge Rate for small batteries or 10 amp
Charge Rate for larger batteries.
NOTE: A buzz, or hum is normal when the output cables have
been disconnected and the AC power cord is still connected to
an electrical source (i.e. wall outlet).
E. BATTERY CHARGER CONTROLS
OPERATION – Model SF-5212-A
Two switches permit Battery Type and Charge Rates selection
Switch #1 permits selection of either Conventional or Mainte-
nance Free and Deep Cycle batteries. If you are not sure of your
battery type, use the (Regular) Conventional Setting.
Switch #2 (3 Charge Rate Modes)
Mode 1 -- Select the 2 amp automatic setting for 12 volt smaller
(<31 AH (Ampere Hour)) or to warm larger lead-acid batteries.
Mode 2 -- Select 10 amp automatic for larger 12 volt batteries
for a faster charge.
Mode 3 -- Select 50 amp Engine Start to assist in engine crank-
ing of 12 volt systems. DO NOT use on 6 volt systems. Use the
50 amp engine start position for cranking automobiles or light
trucks. Use only with battery in the vehicle. This will reduce the
chance of damaging sensitive electronic equipment in the ve-
hicle.