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Categories | Power Supplies | MFJ-4416 Battery Booster Help

Show all reviews of the MFJ-4416 Battery Booster

You can write your own review of the MFJ-4416 Battery Booster.

G4AON  Rating: 5/5 May 19, 2019 07:16  Send this review to a friend!
C version works great  Time owned: 0 to 3 months
I finally got around to buying a battery booster after several years of grumbling about sagging Voltage and low TX power when portable.

The C version is a significant upgrade to the earlier models and is “keyed” using the keying output from your radio. There is a few mS delay before the inverter builds up the Voltage, which can be overcome by running the inverter all the time on CW. The inverter start time does give a slope to the envelope of the first “dit” sent on CW, although in my opinion it’s not worth worrying about.

Extensive CW transmissions at 100W output barely raised the heat sink or case temperature. The additional heat sinks (over the earlier models) are perhaps overkill, but I’d rather have them than overheating.

The output Voltage is well controlled and doesn’t “sag”. Having both Power Pole connectors and terminal posts on the input and output side, gives plenty of connection options.

I haven’t checked for spurious signals on receive with the inverter running, as it’s easy to wire a key line between the 4416C and a transceiver -plus you have less battery drain on RX by not running the inverter all the time. 
Product is in production.
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