They even had it charged at about 68%, how nice of them to have some juice to clear off the manufacturer oils.
Actually, storage at about 2/3 charge is proper. If you ever get one charged to a different level (either discharged or 'fully charged') you should be suspect. Simply sitting at full charge, especially where warm, can kill the battery without even using it. Makers know this and should be following this rule.
Maximum possible battery life calls for fully charging it one time, the very first time you use it. One time only. There after avoiding deep discharge recharging to 'not quite full' rather than 100%. Stopping at 90% (ten percent short) DOUBLES the useful 'cycle life'. You can expect 600 not 300 cycles under the same conditions. Not so important here were changing out a bad 18650 is easy and fast, but the same rules apply with internal Li-ions. Some good information on this kinda stuff here, if it interests you:
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
In fact, the military has this 'baked into' many pieces of gear that use Li-ions. They specify a lower recharge voltage (typically 3.95 not 4.20 Volts). They exchange some run time on say a radio, but avoid having to change out batteries for several times longer. Despite what you might read in the papers about the Air Force buying $10,000 hammers, the military ain't dumb when it comes to gear their lives can depend on. It may be ugly, but it's gonna work. Easy to be picky when someone else is paying for it........
So anyway, getting 'new' Li-ions at 2/3 charge is normal and should be expected and questioned when it doesn't happen (is it really new?). For maximum life fully charge (I recommend 'overcharging', leaving it on charge at least four hours......"overnight" basically.....and practice same). Once before any serious use (heating in our case) after which the advantage is forever lost. The maximum possible is set and will only decay (hopefully slowly) over time as it ages. Eventually capacity decays so 'it won't hold a charge' and the owner declares it dead (usually by saying one of several bad, but traditional, ritual words). Thereafter avoid full charge and complete discharges if possible. Deep discharges when warm already (say like squeezing another session out of a week battery......) can be very hard on the Li-ions, even fatal sometimes if allowed to sit that way too long.
Your call of course, but that's my advice and why. Bill follows.
OF