Battery Charger(Linear 4A) | GM013 for sale from Gammatron

Battery Charger(Linear 4A) | GM013

Supplier: Gammatron

Battery Charger(Linear 4A) | GM013

The GM013 Battery Charger is a compact unit designed for internal switchboard mounting.

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A separate transformer for 12 or 24 Volt use is required. The charging characteristic is initially a constant current which automatically tapers off to a very low level of trickle current as the battery voltage rises towards the charger float voltage output. The float voltage and maximum current output levels are easily preset by controls on the unit.

A boost condition can be introduced which causes the full constant current to flow (irrespective of battery
voltage). A boost timer is incorporated which resets the charger to normal automatic float charging
irrespective of the position of the boost switch, after four hours.

A Red Light Emitting Diode (LED) signals Reverse Polarity battery connection. A Green LED shows the
charge status. While the Green LED is On, or Flashing, the battery is being charged. When the Green LED
is Off or flashing periodically, the battery has reached the preset Float Voltage.

NOTE: These chargers do not come with a transformer. Suitable transformers are listed below.

Specifications

Input supply:	For 12VDC, 17VAC, for 24VDC, 33VAC
Output voltage:	12 or 24VDC (specify on order)
Output current:	nominal 4A (determined by transformer rating)
Operational temperature range:	0 - 60 C ambient
Control potentiometer 1:	set float voltage (factory preset)
Control potentiometer 2:	set maximum current (factory preset)

Calibration

With a voltmeter across terminals 1 and 2, and an ammeter from terminal 1 to battery positive, switch the battery charger into BOOST mode by switching terminals 2 and 3.
Adjust the SET MAX CURRENT potentiometer so that the ammeter indicates 4A.
Turn off the BOOST mode.
Adjust the SET FLOAT VOLTAGE (13.5V for 12V nom; 27.5V for 24V nom) so that the output current is about 0.5A with no external load to the values above. This completes the calibration

To contact Gammatron about Battery Charger(Linear 4A) | GM013 use Get a quote.

NOTE: These chargers do not come with a transformer. Suitable transformers are listed below.

Specifications

Input supply:	For 12VDC, 17VAC, for 24VDC, 33VAC
Output voltage:	12 or 24VDC (specify on order)
Output current:	nominal 4A (determined by transformer rating)
Operational temperature range:	0 - 60 C ambient
Control potentiometer 1:	set float voltage (factory preset)
Control potentiometer 2:	set maximum current (factory preset)

Calibration

With a voltmeter across terminals 1 and 2, and an ammeter from terminal 1 to battery positive, switch the battery charger into BOOST mode by switching terminals 2 and 3.
Adjust the SET MAX CURRENT potentiometer so that the ammeter indicates 4A.
Turn off the BOOST mode.
Adjust the SET FLOAT VOLTAGE (13.5V for 12V nom; 27.5V for 24V nom) so that the output current is about 0.5A with no external load to the values above. This completes the calibration

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To contact Gammatron about Battery Charger(Linear 4A) | GM013 use Get a quote.

AI Overview BETA

The GM013 is a battery charger for 12 or 24 VDC batteries, with nominal 4A output dependent on transformer rating. Its boost timer returns the charger to normal automatic float charging after four hours, regardless of the boost switch position on the unit. Internal switchboard installations suit its compact format, which is designed for mounting within the board.

Separate transformer required; the charger is not supplied with one
17 VAC input for 12 VDC; 33 VAC input for 24 VDC
Float-voltage and maximum-current controls are factory preset
Red LED signals reverse-polarity battery connection
Green LED: on/flashing indicates charging; off/periodic flashing indicates preset float voltage reached

Source: listing by Gammatron on IndustrySearch · Updated 31 Oct 2026

AI Overview is generated by artificial intelligence and may contain mistakes.

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