Oooh, a SLA-rechargeable 15W lantern! Order placed. I'll report back here after recieving and trying this combo.
The runtime should go from 6/9hrs (hi/lo) to 3.5+/5.5 or so, I'm thinking.
I wonder how much difference there is between the stock 11W and the 15W. Fluoro lanterns come in 7, 8, 9, 11 and 15W ratings; how much light difference is there? I will only have an Energizer folding lantern of 8W (2x4) to compare against. You know, now that I think of it, if fluoro lamps are rated in the thousands of hours, why are replacement lamps such a big deal (unless you break the lamp). Do small battery powered lanterns underdrive and damage the lamps?