Good enough to be put in his XC60 that's going to replace the V70.
In other words, I don't know.
He's fed up with it and bought an XC60 today, so he's not going to investigate further. (the V70 has 450000km (~280k miles) and has several other issues that could use some attention).
In my experience batteries rarely have a decent restingvoltage if they have suffered a hard life, but I'll watch the vids.
What is a normal voltage for a D5 while cranking? I replaced my (>7 year old) Varta just to be sure I wouldn't get caught in the winter with a non-starting car, Now, a few years on, the new one (not a Varta) is hardly better than my old battery in hesitant starting. The old Varta is still alive and kicking and will soon be used as an off-grid solar-fed powersupply in my shed
