The LED ones seem to be a good choice . I am more in favor of just good overall lighting instead of the traditional art lights but I have no idea about your style . LEDs are quite energy efficient so the batteries should last quite a long time plus the lights will not get hot so no damage to the art . In galleries the lights are 3' from the walls to highlight the art so keep that in mind too.

They do sell cordless art lights

@Home Interiors who is a professional uses them all the time.

There are LARGE varieties,,,,,,

and nobody can advise best as it will vary with frame on the piece and size of the piece.

https://situlighting.com/collections/battery-operated?tw_source=google&tw_adid=714792504168&tw_campaign=1537212932&gad_source=1&gclid=Cj0KCQiA-5a9BhCBARIsACwMkJ6cznzdTuSoh24ITbyy3ENS7MDY6IL_IAnDKEeT4ALC70aupfLUMa4aArFFEALw_wcB

There is a wide discrepancy in quality, style, size, price and functionality. Maybe Google to compare characteristics and note ratings/comments or head to a good lighting store. I have only used an electric version so can’t help, but I do love the effect on the art.

Thank you to all for your input, it's genuinely apprecited! I've been shopping for almost a week and it seems that the higher priced fixtures do not necessarily provide higher quality (based on reviews). Most fixtures have a 4star review so I guess I'll take a leap and try one out. Thanks again-