BATTERY MAINTAINERS

Battery Tender® Plus, 6 or 12 Volt

The Battery Tender® Plus is a 1.25 amp battery charger designed to fully charge a battery and maintain it at proper storage voltage without the damaging effects caused by trickle chargers. Included is a quick connect ring terminal harness for hard to reach areas and alligator clips for an alternate connection.

  • Temperature compensated to ensure optimum charge voltage according to ambient temperature.
  • Automatically switches from full charge to float charging mode.
  • Battery Tender® at 1.25 amps will charge as fast or faster than any 3 amp charger available.
  • Reverse Polarity Protection to ensure user safety. Red & Green Lights Alternately Flash in this condition.
  • Complete 4-step charging program (Initialization, Bulk Charge, Absorption Mode, Float Mode).
  • 10 year Warranty!

Battery Tender® Plus High Efficiency

The Battery Tender® Plus High Efficiency is a 1.25 amp battery charger designed to fully charge a battery and maintain it at proper storage voltage without the damaging effects caused by trickle chargers. Included is a quick connect ring terminal harness for hard to reach areas and alligator clips for an alternate connection. This unit replaces the 021-0128 in the California market.


  • Input: 100 to 240VAC @ 50/ 60 Hz
  • Output: 12 Volts DC @ 1.25 amps
  • Automatically switches from full charge to float charging mode.
  • Reverse Polarity Protection to ensure user safety. Red & Green Lights Alternately Flash in this condition.
  • Complete 4-step charging program (Initialization, Bulk Charge, Absorption Mode, Float Mode).
  • Safety timer: 72 hours
  • 5 year warranty

Battery Tender® Junior, 6 or 12 Volt

The Battery Tender® Junior is much more than a trickle charger. It has a brain. It's lightweight, compact, and fully automatic; very easy to use, especially in small spaces. It will keep your battery fully charged so that it is ready to go when you are!

  • Perfect for all lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell).
  • Complete 4-step charging program (Initialization, Bulk Charge, Absorption Mode, Float Mode).
  • Automatically switches to float / maintenance voltage after fully charging the battery.
  • If the battery voltage drops too far under load, full charger output power resumes.
  • Solid state two color LED indicates stage of charger.
  • Spark proof.
  • Reverse polarity protected.
  • 12' output cord.
  • 5 year warranty

Battery Tender® Junior High Efficiency

The Battery Tender® Junior High Efficiency is much more than a trickle charger. It has a brain. It's lightweight, compact, and fully automatic; very easy to use, especially in small spaces. It will keep your battery fully charged so that it is ready to go when you are! This unit replaces the 021-0123 in the California market.


  • Input: 120VAC, 60Hz
  • Output: 12 Volts DC @ 750mA
  • Perfect for all lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell).
  • Complete 4-step charging program (Initialization, Bulk Charge, Absorption Mode, Float Mode).
  • Automatically switches to float / maintenance voltage after fully charging the battery.
  • Solid state two color LED indicates stage of charger.
  • Spark proof.
  • Reverse polarity protected.
  • 12' output cord.
  • Safety timer: 80 hours
  • 5 year warranty

Waterproof Power Tender Plus, 12

Charges and maintains both flooded and sealed, maintenance free, AGM, lead acid batteries. Float / Maintenance function maintains batteries at proper storage voltage without the damaging effects caused by trickled chargers. The Power Tender PLUS is easy to use, it's rugged, its compact, it's packed with power, and it's backed by the reputation of the undisputed battery charger industry leader, DELTRAN.


  • WATERPROOF
  • Shock & Vibration Resistant
  • Lightweight - LESS THAN 4 POUNDS!
  • Microprocessor Controlled, BTP Technology
  • Charges both flooded & sealed maintenance free lead acid batteries.
  • Charges any size (capacity) lead acid battery.
  • Reverse Polarity Protection (VIA EXTERNAL IN-LINE FUSE).
  • Complete FOUR-Step Charging Program (Initialization, Bulk, Absorption, & Float / Maintenance).
  • 2 Year Warranty

Power Pro Modular Marine Charger

3-Step Fully Automatic Charging (qualification, bulk charge, float). Charges any size (Capacity) Lead Acid or AGM Battery. Must use with 3 or 4 slot Power Pro Mounting Bracket.


  • 3-Step Fully Automatic Charging (qualification, bulk charge, float)
  • Waterproof
  • Short Circuit Protection
  • Vibration and Shock Resistent
  • Charges any size (Capacity) Lead Acid or AGM Battery
  • Lightweight- Less than 4 lbs.
  • Must use with 3 or 4 slot Power Pro Mounting Bracket
  • Reverse Polarity Protected
  • 2 Year Warranty

High Frequency On Board Battery Charger, 12 or 24 Volt


  • 4-step fully automatic charging ( qualification, bulk charge, absorbtion, float)
  • Short Circuit Protection
  • Reverse Polarity Protected
  • Waterproof
  • Vibration & Shock Resistent
  • Charges any type of Battery
  • Permanent Mounting
  • Lightweight- 9 lbs.
  • 2 Year Warranty

Heavy Duty DVD-40 Modified 12V-12V Dual 12V @ 20A

The DVD-40 Modified 12V-12V is a Heavy Duty Portable Charger with dual independent 12 volt outputs that can deliver a full 20 Amps simultaneously. This product charges a lead acid battery as fast as is chemically and electrically possible without causing any damage. It is perfect for both flooded cells and Absorbed Glass Mat (AGM) sealed batteries. (Note: Please allow 2-4 weeks for shipment of this unit).


  • Charges two 100% discharged Deep Cycle (Group 27) batteries in four to five hours.
  • Charges four batteries in eight to nine hours.
  • 2 Year Warranty.

 

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Looking for more information? Do you have questions about these products?

Call Midstate Battery today at (860) 243-0646 to speak with one of our battery specialists!