Zend certified PHP/Magento developer

Replacement Battery

I have an HP Laptop 15-bsOxx; the original battery states the replacement as HP Spare 919700-850. It states the mAh as 2850 on one area & 2670 on another – which’s correct? I can’t find any replacements with these numbers or within 5% – I’ve found the laptop & battery numbers, but all the mAh’s are 2200. I’m now very confused.