[MRCA] Bren-Tronic BTA Adapter needed

[W2HX]

Hi all,

I have some BB-388/U NiMH batteries that I'd like to charge. I have 3 candidate chargers, PP-8444/U, PP-8444A/U, and PP-8498.  I also have one adapter called J-6357/P (BTA-70288) and although it is designed for a similar battery, my batteries have some keying between the contacts that prevent them from mating with this adapter.

I believe the adapter I need is BTA-70808. Anyone have one of these?

thanks
73 Eugene W2HX