2019 Ranger 570 Mid-Size EPS Lightbar

[BisonPA]

How large (watts) of a light bar can I add without upgrading the battery. I see the generator output is 550 watts at 3000 RPM but I do not see the amp hour rating of the battery.

[Travis]

I looked online at different UTV stores and the light bars for your particular

model seem to not go over 300 watts. 

Here are some different lighting options from the manufacturer

https://www.polarispartshouse.com/oemcatalogs/c/polaris_ranger_2019_ranger_570_eps/polaris_sxs_accessories-lighting

[Willy M]

https://www.amazon.com/Dasen-2016-2018-Windshield-Brackets-2xWiring/dp/B07G8DJ8DT/ref=sr_1_14?keywords=40+inch+light+bar&qid=1562555551&s=gateway&sr=8-14

many more well under $100 bucks.  Polaris 40" light bar is $399.  Amazon has great deals, I put a 50" on my Polaris, $99 delivered.

[kenfain]

If it's near the top of the allowed amp draw. You might have to leave the engine running while in use. Just like when using a winch. Depending on your intended use, you could also look into an auxiliary battery to guarantee an engine start. There's also having separate lights, that don't draw as much, that you could leave on for an area light when parked, instead of the light bar. That would be preferable in any case, to a blinding light bar while stopped/ working. My suggestion would be both. If the utv has a regular car type alternator. You might get an alternator shop bump up the output.