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(1 customer review)


Description Specs

PowerGuard – Flat Battery Protection

Flat Battery Protection is essential for anyone who’s life or livelihood depends on batteries. By automatically switching batteries off before they become flat, PowerGuard ensures that enough power is retained within a battery to guarantee engine starting and prevents excessive discharge of expensive auxiliary battery banks.

PowerGuard employs advanced battery monitoring techniques to determine when battery state of charge meets a number of parameters (Digital Signal Processed voltage and time). When met, an alarm is activated. If batteries are not put on charge (by starting the engine or switching on a battery charger for example), the unit will automatically isolate the batteries.

Proven applications include: Engine Battery Protection on yachts, front line ambulances, police cars, fire vehicles, hire boats, agricultural machinery and plant. Auxiliary Battery Protection: yachts, ambulances, service vehicles and delivery vehicles fitted with tail-lifts.

PowerGuard is available in two formats:

PowerGuard Lite – CE Marked but not e-mark approved for auxiliary battery banks on vehicles and engine start batteries in non-road going applications. Low cost, basic flat battery protection device.

PowerGuard PRO – E-Marked & CE Marked for road-going vehicle use. Independent monitoring and battery protection for up to two completely separate battery banks. Separate sensor circuits and algorithms to protect batteries used in engine start, traction and deep cycle applications. Built in remote battery switching for two battery banks. PowerGuard does the job of both a flat battery protection device but also a remotely operated battery switch.

PowerGuard Lite Datasheet

PowerGuard PRO Datasheet

Contact us for details!

Weight 352 kg
Dimensions 95 × 55 × 45 cm
Number Of Batteries

PG Lite: 1
PG Pro: 2

Continuous Current

PG Lite: 125A
PG Pro: 200A

Ignition Protected Contactor(s)

PG Lite: Yes
PG Pro: Yes

Digital Signal Processing

PG Lite: Yes
PG Pro: Yes

Manual Settting Adjustment

PG Lite: Yes
PG Pro: Yes

Ignition Inhibit

PG Lite: Yes
PG Pro: Yes

Auto Reset Option

PG Lite: No
PG Pro: Yes

Battery Remote Switching

PG Lite: No
PG Pro: Yes

Software Setting Adjustment

PG Lite: No
PG Pro: Yes

PC Data Logging & Diagnostics

PG Lite: No
PG Pro: Yes

Multiple Inputs/Outputs

PG Lite: No
PG Pro: Yes

Mixed 12 and 24V System

PG Lite: No
PG Pro: Yes


PG Lite: CE Mark
PG Pro: CE & E-Mark

Product Rating

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5 / 5

Overall Satisfaction Rating Based on 1 ratings from customers

Customer Reviews

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1 review for PowerGuard

  1. Thailand Charter Co.

    We have PowerGuard fitted to our charter fleet and its perfect, has stopped lots of silly flat battery problems when guests leave things turned on, and if the crew forget to turn off the battery switches when they leave the boat we can still start the engines the next day.