If you are charging an AGM battery, the clicking sound means it is in the second stage before going to float. It will then stop clicking. If it is a lithium battery, it means it is charged complete.
UPG, 12v 4A LFP and SLA/AGM charger, Volts 12 Max. Amps 4 Model# 48140
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$66.99
- Ultra-light weight - A third of the weight of traditional Charger
- Charges 3X faster than sealed lead-acid Charger
- Eco friendly - No harmful pollutants, corrosive acids or toxic heavy metals
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Specifications
Specifications
UPG, 12v 4A LFP and SLA/AGM charger, Volts 12 Max. Amps 4 Model# 48140
Schumacher Battery Charger, 12 Volts, 6 Amps, Model# SP1298
Schumacher Wheeled Manual Battery Charger/Engine Starter, 12 Volt, 150 Amp, Model# SC1437
Schumacher Built 4 Charging Battery Charger, 12 Volt, 10 Amps, Model# SC1339
Volts
Same
12
12
12
12
Max. Amps
Same
4
6
150
-
Charger Type
Same
Automatic
-
Manual
Manual
Cable Length
Same
5 ft
2 ft
6 ft
-
Wheeled
Same
No
No
Yes
No
Amp Charge Rate
Same
4
-
-
-
Overcharge Protection
Same
Yes
Yes
Yes
Yes
Charges Multiple Batteries
Same
Yes
-
-
-
Polarity Reversal Protection
Same
Yes
Yes
Yes
Yes
Power Cord Length
Same
5 ft
-
-
-
Application
Same
LFP/SLA Batteries
-
-
-
Case Material
Same
-
Composite
Other
Other
Product Weight
Same
-
lb
30.3000 lb
4.1500 lb
Dimensions L x W x H (in.)
Same
-
9.38 x 8.13 x 3.88 in
12.25 x 11.88 x 23.5 in
9.625 x 8.875 x 4.875 in
Settings (qty.)
Same
-
-
1
1
Cable Gauge
Same
-
-
8
-
Clamp Material
Same
-
-
Steel
-
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