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77117

Gunson Automatic Battery Charger

The Gunson 77117 battery charger is a fully automatic, microprocessor

controlled unit delivering a maximum charge rate of 10 amps. It is suitable

for 12 volt batteries with capacities between 2AH to 200AH.

It charges in four stages: the initial pre-charge stage brings the discharged

battery up to a preset voltage level to enable the second stage pulse-

charging which assists with battery desulphurisation; the third (absorption)

stage brings the battery up to 100% capacity. The final stage is a

‘maintenance’ pulse charge (float mode) which will maintain the battery in

a fully charged state without overcharging. The charger will automatically

select the appropriate stage of charging depending on the battery’s level

of charge.

It features short-circuit protection, overload current protection, over

voltage protection and over temperature protection.

The 77117 is suitable for regular (sealed or unsealed) Lead Acid batteries,

and AGM (absorbed glass mat) batteries used on motorcycles, cars and

light commercial vehicles. It is also suitable for charging Deep Cycle

batteries (e.g. certain marine applications, golf carts, etc).

CONNECTION:

Note: The charger should be connected to the battery before connecting

to the mains supply. When finished, switch off at the mains supply before

disconnecting the charger from the battery.

1. Identify the polarity of the battery terminals (if not clearly indicated,

the positive terminal or post is normally larger than the negative).

2. Connect the positive (red) clip to the positive battery terminal first.

Then connect the negative (black) clip to the negative battery

terminal.

OPERATION:

3. Once connections to the battery have been made (see above) plug in

| switch on the AC mains supply.

4. The green (power) LED will light indicating that the charger is

switched on.

5. Select the battery type by pressing the button (regular lead-acid,

AGM, or switch to deep cycle). LED will light to indicate battery

type.

6. Select level of charging (2A or 10A). LED will light to indicate

charge level setting.

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