Recent content by schu

I saw these batteries on a laser pointer forumQuality 18650 Batteries? - Laser Pointer Forums - Discuss Lasers & Laser Pointers. Sanyo #18650 Batteries & Chargers Sanyo #18650 Lithium-Ion Cells 2600mAH. What interested me was that they have passed the UL 1642 safety standards.Table of Contents...

Found this on a flashlight forumCR2's and charging - CandlePowerForums "A few things you guys need to know about 3 Volt Li-Ion cells. Before the advent of small (as we use in lights) LiFe cells, there were only LiCo cells that had diodes incorporated within the cell, to in effect, reduce the...

The UltraFire CR2/15270 Li-Ion Battery 800mah on madvapes MadVapes LLCis an unprotected cell. I'm not sure if these are LiFeP04 3.0V cells-if so their charge termination should be somewhere around 3.6-3.8V or if these are 3.0V "regulated" cells that are actually 3.7V liCo cells that have a...

In reply to your question about the trustfire cell they should cutoff at 4.33v which is safe but above the 4.2v recommendation for maximizing cycle life. The capacity seems greatly exaggerated: Trustfire 14500 900mAh protected - Measurements - CandlePowerForums

Here are some more timers that I found:DealExtreme: $9.99 Westinghouse Holiday Count Down Photocell Timer (for AC 125V/60Hz Only) Programmable Receptacle Timer - Smarthome Amazon.com: Ge 8HR Mechanical Blk Timer 2 Outlet Grnd: Electronics...

Found this on dx:DealExtreme: $19.41 White Light LED Flashlight + Emergency USB Charger with Cell Phone Adapters looks like an easy 5v mod. replace the usb connector with a 510 battery connector. already has the voltage boost built in. has a high power mode from DX forum Subject: Activate...

you would need a balance charger like this:HobbyKing Online R/C Hobby Store : Turnigy Accucel-6 50W 5A Balancer/Charger w/ accessories $24.99 looks like a 4 cell pack. you need to know if they are wired in series or parallel to figure out the voltage. If in series multiply by 4 the voltage of...

Been digging down through the flashlight forum and it seems that the Pila IBC charger has a reliable automatic cutoff when the cells reach full voltage. Pila IBC Charger Compendium - CandlePowerForums Buy here: Buy Pila IBC™ 4-stage Charger, AC Adapter, Carrying Case | Pila BC01-AC01 So that...

I am planning to do a 2x18650 mod and had a hard time finding holders for that particular battery. I finally found a couple of sources for them. This place sells multiple cell holder kits that look like they can be wired either in parallel or in seriesLuminous DIY - High performance "Build It...

boondogle uses these http://www.e-cigarette-forum.com/forum/battery-mods/20809-510-nicostick-401-atty-connector.html#post706243 buy here USB Charger(no cord) for M series mini e-cigarette - Spare Parts - Wholesale & Retail Best E-smoking Supplier I think you disassemble it and the charger wiring...

Time how long it takes to charge then use a timer to automatically shut it off. Here is a cheap timer on Amazonhttp://www.amazon.com/Woods-5559206-Countdown-Digital-Timer/dp/B001DD7YSE or...

Since Li-on batteries don't have any memory(performance and capacity aren't affected by how far you discharge them) I'd recommend getting multiple sets and topping them off frequently. Also I think I read(at Battery University or candle power forum) that you should pop them out of the charger...

Comparison shop the various Hong Kong sites. Here is a list of most of them:DealExtreme Alternatives another one I've usedhttp://www.bestofferbuy.com/consumer-electronics-battery-c-12_164.html Then check out reviews and tests here:Flashlight Electronics - Batteries Included - Threads of...

I found this OKR Series 12V 3, 6 & 10 Amp SIP PoLsOkami DC/DC Point-of-Load Converters @ Murata Power Solutions the specs say 94% efficiency with an output range of .6v to 6v and input range of 4.5v to 14v or maybe this TI module .Plug-in Power Modules - Non-Isolated POL - PTR08060W - TI.com

Found this adjustable power supply kitAdjustable Breadboard Supply It features a switch to go between 3.3v and 5v, an onboard potentiometer for adjusting voltage from 1.25V up to within 0.5V of the input voltage and a low dropout. From the picture it looks fairly small.