DC Gate 40 +
This is a 13.8 volt battery back-up system for powering your radio station, “go box”, or RV.  It can output up to 40 amperes from...
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£95.00 £79.17
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This is a 13.8 volt battery back-up system for powering your radio station, “go box”, or RV.  It can output up to 40 amperes from either the power supply or the battery.  The radio, or other equipment connects to the or-gate output.  One input comes from the power supply, the other input is connected to a 12 volt battery.  The higher voltage of the power supply passes through to the output.  But when ac power is lost and the power supply goes dead, the gate switches to the battery, instantaneously.  When the power comes back on again, the gate switches back to the power supply, and the built in 2 ampere constant current charger rapidly restores the battery to full charge.  Ideal for use with Bioenno Lithium-Ferrous-Phosphate batteries as well as sealed lead-acid batteries.  The DC 40+ is solidly made on a heatsink and connections are Powerpoles.  


Power Supply Voltage:  13.8 - 14.2  volts for Lead Acid Batteries, “12volt” GEL, or AGM type, any amp-hour rating

                                       14 -14.8 volts for Bioenno Lithium-Iron-Phosphate Batteries

Current:  40 amperes maximum

Connectors:  Anderson Powerpoles

Diodes:  Two 80 Amp Schottky, IRF 80CPQ030

Diode Drop:  0.3 volts @10 Amps

Charger Output:  2 Amperes constant until near full charge

Charger:  IRF-5210 FET, Comparator bridge, 0.1 ohm sense resistor Schottky diode

Size:   5.25 x 2.75 x 1.0 in., Powerpoles prodrude 0.5 in.


Weight: 9.5 oz. 




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If you have any equipment that needs to be returned to Martin Lynch & Sons, please fill out the form below:

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Upon receipt of goods you have 14 days to return goods however the goods must be returned in original packaging and care must have been taken with the goods you wish to return. Under distance selling regulations you are not entitled to any refund on carriage charges or modification charges made at your request.

Warranty Terms and Conditions

Outside of the 14 faulty return period, returned items cannot be accepted, unless covered by manufacturer's warranty. We will repair as much as possible on site however in exceptional circumstances products may have to be returned to the manufacturer of distributor.

For repairs/replacements under manufacturer’s warranty for any item please download a ML&S return form from the link below and return to ML&S with the faulty product.

International Warranty information

Warranty service for items we sell is available in the U.K. only, unless otherwise noted. It is your responsibility to pay freight for returned items to the U.K. and back to you for desired warranty coverage. All of our NEW products come with a minimum 12 month warranty, (Yaesu & Icom 24 months), with up to 90 days on second-hand equipment. Items returned for service must state "returned goods for repair" on the return air waybill or U.K. import customs duties apply and will be added to your invoice. For more info about returning items please contact our customer help desk, sales@hamradio.co.uk