recovering a Ryobi 40v battery by zapping + to + but has 4 terminals

[lumen aeternum]

The Ryobi 40v charger has a flaw -- when the battery is down to "the tool stops running," it always flashes "defective" until you leave it there a while & remove/replace it a few times, until the battery creeps up enough (to reset the protection circuit ???).

For one battery this is not working, so I want to "zap" the battery + to + with another battery to try to reset any protection circuit. I don't know if I should use the marked + and - terminals; there are two more with inscrutible glyphs.
Anyone know how these terminals are arranged?

The damn batteries cost $130 and they should last more than a few dozen cycles. Even once a week is only 50.

EDIT: this old thread shows the + to + method:
https://www.candlepowerforums.com/vb/showthread.php?245032-How-to-reset-battery-protection
It also has some suggestions for using a variable voltage DC power supply with current limiting, to get it up above the minimum voltage.

 

[Lynx_Arc]

I would contact the place you got the battery from and see if they can replace it if it isn't too old

 

[lightfooted]

Using the contacts available won't work because of the circuitry involved, you would need to open the case and access the two sides of the battery directly.

 

[lumen aeternum]

Using the contacts available won't work because of the circuitry involved, you would need to open the case and access the two sides of the battery directly.

I can do that. Presumably the donor battery can use its terminals?