Alright! I didn't think it was a big deal. As long as the battery type and voltage were the same. I have a mod that I vape with and I have 2 sets of 18650's for it and the ones with the higher milliamp rating produce a faster and hotter vape. My basic set is only 1500 milliamps. My hotter batteries are in the 3000 milliamp rating. So It had me curious as to what difference it would make with the saber's 14500 milliamp rating. Thanks for your reply! ^_^
This is kind of true; but as with all these things they are rarely all cut and dried and there are a few variables at play such as internal resistance and the technology within the battery itself. 14500 or 18650 is more of a physical design parameter than a chemical construct specification, so there are a number of different Li-Ion battery variants around that all conform to the '14500' or '18650' size but have different internal characteristics. Your 'hotter' batteries may have either a different internal chemistry or different internal resistance than your 'cooler' ones. LiFe are a lithium battery that has a lower operating capacity and operating voltage range, but are currently the 'safest' lithium based cell out there in terms of thermal runaway during charging - and 1500mAH seems low for a cell of 18650 specs - so it may well be that the chemistry in your cells is different and the performance difference is down to the operating voltage of the cell.
There are in fact different types of Li-Ion batteries; what most people see as a 'Li-Ion' battery is a Lithium-Cobalt matrix. This is relatively sensitive to over-charging and over-discharging, and therefore is often equipped with an in built circuit to protect it from both conditions.
Other common types of li-ion cells are the types made with Manganese or with Iron which demonstrate slightly different properties.
For example the Manganese compound will cope with higher discharge rates than the ones we mostly use, and have a less dense power storage matrix (so you are trading increased load bearing and safety margins for longevity). As they are more robust (less likely to go into thermal runaway) they often lack the protection the regular cells most often have and it is still worth saying that they are
not explosion proof and need the same caution when charging as regular Lithium Cobalt cells.
A hybrid Manganese Cobalt cell offers the best of both worlds described above but it is not mainstream at this time due to expense, but as it is more broadly adopted, it will probably supercede them unless something far better comes along first and steals the market share... Watch this space!
The Lithium-Iron based cells hold less charge capacity, and operate at a slightly lower voltage but are far safer in terms of overcharging. So be careful with compatibility as all things in Lithium batteries are most certainly not equal!
There are more types out there, but those are the most common ones currently 'in play' today.
One Note to finish with: If you are looking to get spare Lithium Ion batteries for your sabre BEWARE. Get reputable batteries from a reputable source. The maximum energy density for the common Li-Ion batteries does not allow for the mAH numbers quoted on most of the 14500 cells advertised for sale on eBay and you will be lucky to get 1/4 of the quoted amount of power storage than the "2500 mAH" or suchlike cells advertised on many of eBay's offerings. What they are suggesting is impossible to fit in the size of cell with the materials technology, so treat them with a bucket of salt; and in my opinion false advertising is an indication of dishonesty - what else are they not being honest with? They are advertised with a protection circuit? They lied about one thing, what about the other? Can you trust them not to set your house on fire?
On a far better note.... the XTAR cells that arrived in my Manticore cycle at just over 850mAH in a cell quoted as 800mAH - which is a believable amount of power where the reality exceeds the advertising. 
