But this is why lithium ion batteries need special lithium ion charging circuitry in the first place... If you don't have this, the cells will happily take as m

But this is why lithium ion batteries need special lithium ion charging circuitry in the first place... If you don't have this, the cells will happily take as much energy as you give them and then promptly catch fire. It doesn't make sense to me that this would only now be a problem. Either the circuit was designed correctly, and this excuse is bullshit, or they should have issued a recall ten years ago.