Just an FYI, for those of you who think you may get even brighter luminosity if you get the ultra special Energizer titanium or lithium batteries, I would suggest you DON'T use them.
Master Replicas is specific about what kind of battery you are supposed to use with the Force FX: only akaline batteries. If you don't use akaline, you run the risk of damaging your Force FX, or severely shortening its lifespan.
Funny, because I have been using the Energizer e
2 Lithiums for a year and a half now in my converted Luke ROTJ with no adverse effect whatsoever... And before I converted it, I still used them.
I also Use Li-Ion batteries with MR boards regulary with no downsides...
You do realize that the MR instruction sheets are written at a 6th grade reading level right? The Force FX Lightsabers were designed NOT to be taken apart, and were intended to be left in their factory state. The boards inside them can handle a lot more juice than they normally receive, and we are talking voltage here.
Batteries that output a little more mAh are not going to adversely effect anything. Sorry to point out the misinformation, but your statement is not grounded in the reality you may think it is.
Basically MR put that in the instruction manual to cover their sixes in case some stump jumpin' jethro decided to put THREE li-ion rechageables into the saber, bork it up and demand a refund.
Let's face it here, if you put three ultrafires in a STOCK MR saber... You won't be happy with the results, when you start smelling burnt wiring, and no cool stuff happening in the saber, except for som smoke rolling out of the pommel cap when you open it up.
MR boards can handle up to 6.5V. Three Ultrafire LC14500's = 10.8V... That's why MR put that disclaimer in.
The other reason, is that NIMH rechargeables typically run around 1.2V which is a little lower than the 1.5V a normal alkaline battery runs at...
Running a saber at a lower voltage than its target voltage will cause odd fluctuations in sound quality, and can provide a dimmer or even spotty blade. Which in turn will lead to yet another return to the retailer, and a loss to the profit margin of the company...
ALL manufacturers write stuff like that into instruction manuals to cover their butts. It's not that they think everyone is ignorant, but they have to assume as such for the safety of their profit. Basically if they dumb it down as much as possible, then they can turn a larger profit on each unit sold, rather than having to have units returned to the manufacture point for inspection or repair...