Battery Defender 48 Volt 3 Amp Battery Charger / Maintainer with Clamps
Item #: 4807SR   |    In Stock

Battery Defender 48 Volt 3 Amp Battery Charger / Maintainer with Clamps
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Battery Defender 48 Volt 3 Amp Battery Charger / Maintainer with Clamps

Item #: 4807SR   |  In Stock

Price: $99.95
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Price: $99.95


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1 Year Warranty
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Product Specifications for Battery Defender 48 Volt 3 Amp Battery Charger / Maintainer with Clamps

Specifications:
BM Part #: 4807SR
Voltage: 48 Volt
Capacity: 3 Amp
Length: 6.9"
Width: 3.4"
Height: 2.3"
Shipping Weight: 2.00Lbs
Warranty: 1 Year
Features:
  • Not recommended for use with Golf Carts
  • Works with gel, AGM, sealed, wet, and any other type of lead acid battery.
  • Automatic cut-off and then true Float mode. Battery Defender can be left connected indefinitely without harming your battery.
  • Battery desulphation: Preventative and reactive care for the leading cause of battery faiture.
  • Compact and light-weight.
  • 5 ft. AC cable and 5 ft. DC cable.

Product Description

Free Standard Shipping!

Order today and receive free standard shipping on your Battery Defender 48 Volt 3 Amp Battery Charger / Maintainer with Clamps. Only valid in the contiguous 48 states and not valid with any other offer.

The 48 Volt, 3 Amp Battery Defender charger is a fully automatic charger appropriate for keeping any of your 48 volt lead acid battery systems charged, maintained, and ready for action. This double-insulated charger with its 4-stage charging process (explained further below) features a battery desulphating mode, constant current, constant voltage, and float voltage. The 100-240 VAC input makes it suitable for anywhere in the world.

Summary

  • 48 volt, 3 amp constant current -- equivalent to a 6A tapered charger in charging time.
  • Universal input: 100VAC to 240VAC - suitable anywhere in the world.
  • Automatic cut-off and then true Float mode. Battery Defender can be left connected indefinitely without harming your battery.
  • Battery desulphation: Preventative and reactive care for the leading cause of battery failure.
  • UL, CSA, TUV listed and meets EMC standards. Our Battery Defender has been through rigorous nationally-recognized testing certifications for electrical safety.
  • Compatible with on-board (internal) applications.
  • Compact and light-weight.

The 4-Stage Battery Defender Charging Process

Stage 1: Deep Discharge Charging Pulse Mode: LED Flash
The Battery Defender starts charging at 0.5 volts and gives pulse current up to 5 volts. This removes recently formed sulphation during battery's in a deep state of discharge.

Stage 2: Contstant Current Mode (CC): LED Orange
The Battery Defender changes a constant current of 3 amps. When the battery's voltage reaches cut-off voltage, the charging state changes from CC (Constant Current) to CV (Constant Voltage) mode.

Stage 3: Constant Voltage Mode (CV): LED Orange
During this stage, each battery cell's voltage is equalized. The Battery Defender holds the battery at cut-off voltage and the current slowly reduces. When the current reaches 0.3CC (Constant Current), this point is called the "Switching Point." This Switching Point is one of the greatest features of the Battery Defender. Here, it can adjust current automatically according to the battery's capacity. This feature makes the Battery Defender unique compared to other chargers

Stage 4: Standby Voltage Mode: LED Green
The Battery Defender maintains the battery voltage at float voltage and current slowly reduces to the discharge current of the battery (almost zero). The Battery Defender can be left connected indefinitely without harming the battery.

If the battery voltage goes below 54V, the charger changes from any mode to Constant Current mode (Stage 2) and restarts charging. The charging cycle will go through Stage 2 to Stage 4.

Cross Reference

The Battery Defender 48 Volt 3 Amp Battery Charger / Maintainer with Clamps has been cross-referenced to be compatible with or replace these OEM part numbers and models:
4804SR

Customer Reviews

22 Reviews | 4.6 out of 5
5 stars (13)
4 stars (9)
3 stars (0)
2 stars (0)
1 star (0)
95.5%
Would recommend this product.
What our Customers are saying
48 volt charger
July 3, 2020
by on July 3, 2020

I added a different end to be able to plug into my handicap scooter. Works great now.

Hammer
Texas
Would recommend to a friend?
Yes
So Far So Good Except for Clamps
February 22, 2020
by on February 22, 2020

As others have stated, the clamps are too short to reach if you have a golf cart with pack positive and negative more than a foot away from each other you will have to extend them...I opted to cut off the clamps and use ring terminals for a pemanent installation...Other than that it seems like it is doing what it is supposed to..

Tom
FL
Would recommend to a friend?
Yes
Battery Defender 48 3 amp battery charger
March 28, 2018
by on March 28, 2018

Battery clamps are cheap.wiring between positive and negative clamps is not long enough to charge 48 volt cart.i personally extended the wiring and used better clamps. Charger works well with upgrades

Maynard
Bangor Mi
Would recommend to a friend?
Yes
Backup charger
January 26, 2018
by on January 26, 2018

great product to keep on your batter when you do not use the cart very much.

Jon
ms
Would recommend to a friend?
Yes
48 volt charger
December 3, 2017
by on December 3, 2017

If you have a 48 volt electric golf cart you will love this charger. The original high current charger will not charge a dead 48 volt power bank. Use this charger to put some charge into your power bank then the OEM charger will now sense the incomplete charge and take over the completion of a full charge

Handieman
The Villages of florida
Would recommend to a friend?
Yes
48 Volt Battery Charger
July 10, 2017
by on July 10, 2017

I have bought at least 6 of these chargers and had very good service out of all but 1 which Battery Mart took very good care to get it right.

Russ
Lakeland FL
Would recommend to a friend?
Yes
Trip points
Apr13l 25, 2017
by on Apr13l 25, 2017

Chargers till it reaches 57.5 then it will step back and finally settle on 55.1 volts. At least with my voltmeter that's what it says it's doing.

Ed
Mesa az
Would recommend to a friend?
Yes