Kestrel
Flashaholic
I have a second battery in my vehicle (powering an inverter), and am interested in an inexpensive on-board charging system to top it off every 4-5 days.
It is an AGM battery:
https://www.dropbox.com/s/btu90gaxaejqjfh/20190720_171757.jpg?dl=0
This battery is fully independent of the cars' electrical system & not connected in any way - long story, but I am not interested in doing so.
The battery is installed so that it already incorporates a charging jack, with which I can utilize my 110v trickle charger at home.
Near the battery is an extra cigarette lighter adaptor; I am thinking of two options to utilize this for a charging setup (during vehicle operation):
1:
Amazon/eBay direct cable (cig lighter adaptor -> charging jack), ~$10.
Very basic, but includes an inline fuse. I would handle the charging process manually every 5 days or so, with a separate voltmeter to verify battery voltage.
Or, 2:
Amazon/eBay cig lighter adaptor charger, ~$20.
/Supposedly/ will not overcharge, but /many/ reviews indicating that this feature has been unreliable, cooking the battery. Also, reports of having the opposite polarity than what is indicated by the wiring color coding.
For simplicity sake, I am inclined towards the simpler approach; as I would be simply using 'line voltage' from the car's electrical system, this would be safer for the $$$ battery yes ? The inconvenience of handling this manually, and perhaps not obtaining a full charge is not an issue.
Thoughts or suggestions ?
Again, for various reasons I am not interested in integrating this AGM battery with the cars' electrical / charging system.
Thanks in advance,
It is an AGM battery:
https://www.dropbox.com/s/btu90gaxaejqjfh/20190720_171757.jpg?dl=0
This battery is fully independent of the cars' electrical system & not connected in any way - long story, but I am not interested in doing so.
The battery is installed so that it already incorporates a charging jack, with which I can utilize my 110v trickle charger at home.
Near the battery is an extra cigarette lighter adaptor; I am thinking of two options to utilize this for a charging setup (during vehicle operation):
1:
Amazon/eBay direct cable (cig lighter adaptor -> charging jack), ~$10.
Very basic, but includes an inline fuse. I would handle the charging process manually every 5 days or so, with a separate voltmeter to verify battery voltage.
Or, 2:
Amazon/eBay cig lighter adaptor charger, ~$20.
/Supposedly/ will not overcharge, but /many/ reviews indicating that this feature has been unreliable, cooking the battery. Also, reports of having the opposite polarity than what is indicated by the wiring color coding.
For simplicity sake, I am inclined towards the simpler approach; as I would be simply using 'line voltage' from the car's electrical system, this would be safer for the $$$ battery yes ? The inconvenience of handling this manually, and perhaps not obtaining a full charge is not an issue.
Thoughts or suggestions ?
Again, for various reasons I am not interested in integrating this AGM battery with the cars' electrical / charging system.
Thanks in advance,
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