Streamlight SL20x

[jeff51]

Welcome to the BLF.
Your best bet might be to retire the old light and pickup something like a ProTac HL 5-X.
If you want to stay with about the same form factor as the SL20.
https://www.amazon.com/Streamlight-88081-3500-Lumen-Rechargeable-Flashlight/dp/B079D3DDGB

I did a review of one a few years back,

[Review] Streamlight Protac HL 5-X Tactical Flashlight

A 3500 Lumen Duty Light with a runtime of 1.25Hrs on high, Beam distance 452m, and 51,000 Candela (As claimed by Streamlight). Rated IPX7 – 1 meter water for 30 minutes and 1 meter impact. It has a Glass lens, TIR optic, 6000 series “aircraft” aluminum with anodized finish, C4 LED Technology, and a “sure grip rubber sleeve”. Made in China. Here’s a link to the Streamlight product fact sheet: I found a good deal on this light at MidwayUSA ($73). (Edit the typical price has now dropped to t…

There are so many lights to choose from these days. Updating an old hot wire flash is often more costly than buying new.
All the Best,
Jeff