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Streamlight Microstream (10440 Cell)

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Li-ion Safety and Basics

I haven’t seen any reports of people running the Microstream on li-ion batteries so I thought I’d buy a couple and start testing them. After 8-9 months of use I’m pleased to report the extraordinary results. It’s hands down the best throwing factory option AAA light available.

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36 COMMENTS

  1. Holy Mother… The first 5+ minutes of this video could be summarized in 45 seconds tops. It's great to put out informative videos but have some idea of a script to avoid rambling on/repeating yourself.

  2. sorry but could not normally watch your movie completely. please tell me the acamulator 10440 strellayt mikrostrim keeps easily does not overheat. and I can freely use such a battery. I'm sorry to write through an interpreter.

  3. im FINALLY in the 10440 microstream club. i had efest flat tops and they didnt work in my gen 3? microstream which is the 35 lumen version. i ordered some trustfire button tops off of ebay and NOW this could possibly be my new favorite light for short tasks.

    i had read of some people using a dollop of solder to make the flat tops work but i have an ultratac k18, lumintop tool that i ruined so only works with 10440's, and 2 olight i3e silver's and had 2 thrunite ti3's but gifted them both. i keep a surefire titan plus on my keychain and run eneloop pro's through it but the microstream/10440 combo is pretty much exactly what i wanted in a small light. slim enough, single mode with good brightness, priced well. thank you patriot36! i almost gave this light away too haha but not anymore!

  4. I must say the light output is great with the 10440 but once the battery has discharged, the light is off, no getting dim with this set up. I purchased a pack of 4 TrustFire 10440 3.7 Li-ion for around $10 and the charger for about $7. Depending on my activity for the day, I will usually have an extra battery on my person. Generally I replace my battery every 1 to 3 days to avoid being caught with my tail between my legs. As an EDC this is the most affordable, compact and durable light I have used. With the extra voltage from the 10440 the Streamlight experiences quite a bit more heat but have run it for a full discharge (around 30 – 40 min).

  5. I need to buy a decent charger and some low discharge NiMH batteries.

    It's good to know that you can "overclock" the Streamlight Microstream with a nifty battery.  (They are pretty cheap, and the batteries cost $9 + the charger ($30)…)

  6. Question! I have a Maratac AAA Rev. 3 which claims 130+ lumens on high. Of course I want more "umpf". If I put a 10440 in there would it damage the light? The manufacturer claims that it would void the warranty if I did that but I don't care. It's $30 but it's worth it!

  7. I "should have mentioned" what? It's a Ultrafire 10440, blue, unprotected cell as stated in the video. If it doesn't work in your microstream, give the batteries to someone with a 10440 specific light or go purchase one yourself. If you read through the comments, the stated cells work 95% of the time. These are cheap components so perhaps your light or batteries are slightly longer or shorter than they should be. Experiment a bit or order the cells from a different source.

  8. Sure, that possibility exists but the 50,000 hours stated LED life is so high that only if you get 10,000 hours, new lights will be available long before you wear one out.

  9. The UltraFire 10440 AAA cell you show in this video DOES NOT WORK in the StreamLight Microstream flashlight since the battery is a Flat Top on the + side. I have the flashlight and I bought the battery based on this review and the combo doesn't work, doesn't light up at all. You should have mentioned it. Which 10440 AAA cell product are you using?

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