I have a Toshiba Satellite A215-S4807 and a bit newer Satellite L305D-S5974. The A215 has a PA3533U-1BRS battery and the L305 has a PA3534U-1BRS.
I placed the battery from the A215 into the L305 laptop. It's a bit more snug, but it does fit.
My problem is, the battery drains extremely fast...