They are bad. You will need good batteries.
eBay
Used, fully functional. Shows normal cosmetic wear from previous use (dust, scuffs – see photos). Tool only. Battery and charger are NOT included. Item specifics Brand: Ryobi Model: PCL500 MPN: PCL500 Power Source: Battery Voltage: 18V Blade Diameter: 5 1/2 in Type: Circular Saw Color: Green Set Includes: Tool Only Battery Included: No Description RYOBI ONE+ 18V Cordless Circular Saw model PCL500. The tool has been tested and works properly. Shows normal signs of use from previous work (see photos). This listing is for the tool only. Battery and charger are NOT included. You will receive exactly what is shown in the pictures.
eBay
The Ryobi ONE+ 18V Cut-Out Tool PCL540B is a powerful and versatile tool designed for cutting through various materials with ease. The tool also features an LED light for improved visibility during use.
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For parts only, it is in nice condition, but it doesn’t power up.
eBay
Circular Saw - Motor provides 4,700 RPM for fast, clean cutting. Circular Saw - Ability to cut through 2-by material with 1-11/16 in. depth of cut. Drill/Driver - Powerful motor provides up to 515 in.
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eBay
Tested - Reconditioned. We will do our best to locate the parts you need and make every effort to save you money.
eBay
Ryobi 18v 5.5 Circular saw in great shape. Complete and in the box. Comes with blade and tool only, no battery or charger. Bun-669#63
eBay