So I am shopping for a cordless/battery powered shop vac. One I can also use in the house. One I can easily carry around. DeWalt seems to have a nice one. But the batteries can cost as much or more than the vac. https://www.amazon.com/gp/product/B0...KIKX0DER&psc=1 There are others with brand ... More on bbs.homeshopmachinist.net

Project Farm has a video on these little cordless shop vacs: Project Farm Video I believe he found the Milwaukee and Ridgid ones tested the best. I have the Ryobi because it was cheap and I already had some of their batteries, and going by that video I'm glad I didn't spend more on the DeWalt ... More on garagejournal.com

I have the harbor freight Bauer one and it’s been great. I mostly have dewalt stuff and the dewalt one didn’t have great reviews on the vacuum wars YouTube channel. So I chanced it on the Bauer one. They did a review of cordless wet dry vacs I think the rigid was the top dog. The dewalt is the only one you can leave in the filter for wet stuff but it leads to having the worst suction. More on reddit.com

The only cordless vacs I know of that get anywhere near corded are the Milwaukee dual battery dust extractor (not released yet) and Makita 80V dust extractor. Both are M-class dust extractors with auto-cleaning filters, so $$$$. The unreleased Milwaukee can also use batteries or AC power. The wet/dry dual battery Milwaukee and Makita are a bit cheaper, but still $$$ (plus new batteries for you). Here's some links if you're interested and then noping out at the price (note that this is AU dollars, so convert to your local currency, or look them up from your local stores) * https://www.totaltools.com.au/195670-makita-80v-max-aws-m-class-dust-extraction-vacuum-skin-vc006mz02 * https://www.milwaukeetool.com/products/0888-22hd * https://www.totaltools.com.au/195206-milwaukee-18v-fuel-23l-wet-dry-vacuum-skin-m18fvc23l0 * https://www.totaltools.com.au/186190-makita-40v-max-brushless-wet-dry-dust-extraction-vacuum-skin-vc003glz02 Most cordless vacs are fine for pressure (around 6-18kPa for small ones, and 15-25kPa for bigger units), but they don't have much flow rate. Pressure is what you need to pull air through small fittings (so attaching to sanders, etc.) and flow rate is what you need to lift heavy debris. The problem with cordless vacs is runtime, so they dial the power down to make sure people get ~30-45min runtime. You'll get mixed opinions because people have different needs. Some vacs will prioritise runtime which is good for some, bad for others. They can also trade-off pressure and flow rate, so some will have low pressure but higher flow rate (good for heavy debris, bad for using small nozzles or sucking up water). If you're the tinkering kind, you could try running vacuums in parallel. So just buy whichever Bosch/Ryobi vacuum you like best. Then if you need more flow rate, buy another and make a manifold/coupler so you can combine their flow rates. You'd prob need 3-4 cordless vacs before you got flow rate equivalent to a corded vac. Overall, you're better off with corded, unless you really need to run cordless. More on reddit.com