I built an “LED module” that can convert any Coleman-style Gas Lantern to LED and LiIon cells without modifying or altering the lantern itself. (meaning it takes roughly 60 seconds to convert the lantern back to Gas operational.)
Its sort of “best of both worlds” in lantern technology i guess.
This LED module, simulates the original Gas Mantle light and tint very closely, anf has 2 modes, (High & Low) can run on either a single, 2, 3 or four rechargeable 18650 Cells, and with four 18650’s with roughly 1800mah each, it gets 12 + hours on High before the driver steps it down to low to protect the cells from over discharging. its output on high after 30 minutes is roughly 450 - 500 lumens, and close to the output of a Coleman Model # 222 Gas lantern or most single-mantle Propane lanterns.
The module uses a Cree XM-L2 3000K Warm White emitter, and a two-7135 chip 105C driver, with remote switch.
Below is the module working in a 1977 Coleman Model #335:
Below is what the module looks like out of a lantern:
Below is a collage of pics of the parts of the module how i built it.
First i used some bare parts, copper plate & a heavy brass fitting for Heatsink, a Nanjq 105C Flashlight Driver, a CREE XM-L2 Warm White 3000K Emitter, two double-18650 LithiumIon Cell holders, some wire, a switch, some shrink tube, some velcro-webbing, and a plastic shade/diffuser with netting over it to simulate a mantle. With some soldering, drilling, and gluing, the simple module can work in almost any single mantle lantern to simulate it as working on gas, only without the heat and hiss noise.
The module’s battery packs just “hang” over the gas frame hidden under the vent, while the “fake” mantle with LED holds on to the burner with a set screw, and the switch simply hangs out of one of the holes in the globe base.