Quindrel
Quindrel
VoltKeep

VoltKeep™car battery maintainer

$89.99

  • Clamp connectors for 6V and 12V batteries
  • Selectable STD/AGM, Lithium/LiFePO4 and Repair modes
  • Eight built-in protection functions
  • Onboard temperature sensor adjusts charging

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  • Clamp red to the positive terminal and black to the negative terminal. Then plug VoltKeep into a standard outlet.
  • Pick the mode that matches your battery. Use STD/AGM for lead-acid types, Lithium/LiFePO4 for lithium cells, or Repair for an idle battery.
  • Leave the unit connected. It keeps monitoring the charge level and adjusts its output on its own.
  • VoltKeep Battery Maintainer Unit
  • Battery Clamp Connectors
  • Quick-Start User Manual

We offer free shipping on orders over $150. Once your order is dispatched, the estimated delivery time is 5 to 12 business days depending on your location — tracking is emailed as soon as it ships.

Changed your mind? You can return your product within 90 days of delivery for a refund — see our Returns page for the full policy.

Charging modes and built-in protections

Float charging

A microprocessor monitors the battery's charge level and moves into a float stage once the battery is full. The unit then adjusts its output automatically while it stays connected.

Repair mode

Repair mode uses pulse charging and is meant for batteries that have been sitting idle or will not take a charge from a standard charging profile. You select it on the unit.

VoltKeep

Eight protection functions

Built-in protection covers overcharge, over-discharge, short circuit, reverse polarity, overload, low voltage, high voltage and overheating. These functions are part of the unit's circuitry and need no setup.

Temperature sensing

An onboard temperature sensor feeds the charging logic, which adjusts its parameters to the surrounding conditions. This applies in a hot shed as well as in a cold garage.

Frequently Asked Questions

It supports 6V and 12V batteries, including Lithium, LiFePO4, AGM, GEL, SLA, Flooded, WET, EFB, Calcium and standard lead-acid. Select the mode that matches your battery before you start charging.

Yes. It is a maintainer, so it is built to stay connected to a stored battery. The unit monitors the charge level and adjusts its output automatically while the clamps are attached.

Repair mode uses pulse charging. It is intended for batteries that have been sitting idle or will not accept a charge in the other modes. You choose it with the mode selection on the unit.

Match the mode to the battery type. STD/AGM covers lead-acid types, and Lithium/LiFePO4 covers lithium cells. Use Repair for an idle battery. Check the battery label if you are unsure of its chemistry.

Yes. Disconnect the clamps from one battery and attach them to the next. VoltKeep works with cars, motorcycles, boats, RVs, ATVs and lawn equipment that use a supported battery type.

The output is 0.75–2A. It works with 6V and 12V batteries. That is a maintainer-level output, which suits keeping a battery topped up between uses.

VoltKeep has eight protection functions: overcharge, over-discharge, short circuit, reverse polarity, overload, low voltage, high voltage and overheating. Still, match red to positive and black to negative when you attach the clamps.

Yes. An onboard temperature sensor feeds the charging logic. It adjusts the charge parameters to the surrounding conditions, so the same unit can be used in a warm shed or a cold garage.

VoltKeep, a car battery maintainer, attaches clamps to the battery terminals, red to positive and black to negative, then plugs into a standard outlet. A mode is selected to match the battery chemistry.

The VoltKeep battery maintainer package contains the maintainer unit, battery clamp connectors and a quick-start user manual. The unit has STD/AGM, Lithium/LiFePO4 and Repair modes selectable by battery type.
VoltKeep

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VoltKeep: A Car Battery Maintainer With Selectable Modes

VoltKeep is a car battery maintainer that plugs into a standard outlet and attaches to the battery terminals with clamps, red to positive and black to negative. A mode selector matches the charging profile to the battery type.

As an auto battery maintainer, it offers STD/AGM for lead-acid types, Lithium/LiFePO4 for lithium cells and a Repair mode for batteries that sit idle. The listed chemistries include AGM, GEL, SLA, flooded, EFB and calcium, in 6V and 12V.

This car battery maintainer also has an onboard temperature sensor and a reverse-connection safeguard. As a battery maintainer charger, it fits cars, motorcycles, boats, RVs, ATVs and lawn equipment.

  • Output range: 0.75–2A
  • Eight protection types, including short circuit and overheating
  • Battery charger and maintainer with clamp connectors and a quick-start manual

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