HID battery pack questions

I’m talking about the cheap ebay/alibaba kind. How do they compare to laptop battery packs in terms of circuit design and safety? Do they have the usual overcharge, overdischarge, thermal protection, etc.? Is there a way to measure voltage on them? I haven’t tried yet because I’m afraid I will short it . I don’t know which terminals to test. Has anyone ever taken one apart?

I don't know but I will bump this thread for an answer. :D