Topic: Is there any way to "load test" a battery out on the road?

[Shenanigans]

My battery is acting up like there is either a short (But my circut breaker does not trip ) or I think my AGM battery is crapping out on me. I looked up and down what little wiring there is and I cant find contunity between any power wires and the frame.

The 6ah battery reads slightly low at around 12v but as soon as the key is switched on voltage drops. Which is a sign of a faulty battery right?

[TwoTired]

My battery is acting up like there is either a short (But my circut breaker does not trip ) or I think my AGM battery is crapping out on me. I looked up and down what little wiring there is and I cant find contunity between any power wires and the frame.

The 6ah battery reads slightly low at around 12v but as soon as the key is switched on voltage drops. Which is a sign of a faulty battery right?

Could be.  But, it is also a sign of an overloaded battery.  A stock 550 draws about 10A with the lights on.  The stock battery is 12AH.  You didn't say how much voltage your example dropped.  The stock battery would be at 10V after an hour at 12A draw.  A 6AH battery would be at 10V after about 20 minutes at a 12A draw.  I wouldn't expect a long service life from a battery that was employed beyond its rating, particularly if the electric starter was used.

The stock battery when fully rested after a thorough charge would read 12.6V or 12.7 V.

Cheers,

[Shenanigans]

The battery is surely not overloaded. No stock harness, all there is is a headlight, tach/speedo light and taillight and I would think minimal losses with the relatively fresh wiring. Also no electric start, solenoid is there but its not connected to the battery.

The voltage drops, not instantly but quickly, down to about 4v. If I were to leave it on it would keep dropping a little lower. I disconnected the headlight/tachlight so there is nothing but the tail light. Same thing but just slightly slower rate of drop.

I cant think of anything else now except the battery being the culprit.

[KingCustomCycles.com]

Turn the headlight on and hit the start button with a meter attached.  If it drops below 11 volts and heads down from there, you are in need of a battery store. 4 volts at any point is indicating dead or dying cells in your battery.

[TwoTired]

I probably can't help then. If the bike isn't stock and you haven't added up all the electrical loads, I have no way of knowing what your actual battery drain is.

Your ignition coils draw power, as does you alternator, so it is not just your lighting that loads the battery when the key is switched on.

Sorry, but if we don't know what you have, there is no way to do a remote analysis.

An instantly dropping battery is either undercharged, overloaded, or expended.

Good luck!

[Shenanigans]

Luckily there was the same battery chain store here as where I got the original. I took it in and they told me what I suspected, bad battery. They had another of that exact battery so I got lucky, since its a bit of a one off. Thanks for the help.