jumping with a lower capacity booster battery?

[fewinizu]

Hey E30 gurus - I need to jump my 89 325iC and both my booster batteries have a lower Ah rating than the Interstate Mega-Tron MTP-48 H6 in the E30 (Ah = 70).
My manual says "the Ah of the booster battery should not be lower than that of the discharged battery, use of batteries of substantially different Ah rating may cause explosion/personal injury."
The highest capacity booster battery I have access to right now is an ACDelco 124 RPS rated at 66 Ah. So clearly the word 'substantially' is open to interpretation.
If I jump from the ACDelco is this going to cause me damage to the E30's electrical system?
Thanks

https://topfreepornsites.me

[Vincenze]

Can't you just leave the booster connected to your battery overnight to recharge it?

[TobyB]

Nope, it won't cause damage- it just might not work. It probably will. Attach it to the lugs under the hood for extra.... hoodiness, and less chance of explosion.

Me, I use a battery charger, but I'm old.

t