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I have a drill and battery with no charger.

LBXR1512 from Black & Decker

"12V Lithium" 18W 1.5Ah "10V under load"

What does "Type 5" mean?

A partly charged batter measures 11.66V with no load.

I don't know if it is 4 cells of 2.9V each or 3 cells at 3.88V.

It might be 4 cells and I should charge to 4.1x4=16.4V.

It might be 3 cells and I should charge to 4.1x3=12.3V.

I think charging at 0.5A should be very safe.

Question: How would you charge it?

Graph form battery university .com

LBXR1512 from Black & Decker

"12V Lithium" 18W 1.5Ah "10V under load"

What does "Type 5" mean?

A partly charged batter measures 11.66V with no load.

I don't know if it is 4 cells of 2.9V each or 3 cells at 3.88V.

It might be 4 cells and I should charge to 4.1x4=16.4V.

It might be 3 cells and I should charge to 4.1x3=12.3V.

I think charging at 0.5A should be very safe.

Question: How would you charge it?

Graph form battery university .com