Nexstar 8SE, SV F60M3 ES 82* 14, 8.8, Meade 5K 24 Constellation Hunter Norther Skies #101 Lunar Club #747 Messier #2629
• Celestron Ultima 8, f/10 • Zhumell Z12, f/4.9 • Intes MK-67, f/12 • Celestron C5 Orange Tube, f/10 • WO 80mm Fluorite APO, f/6.9 • Carton 60mm ATM, f/16.7 • a few Plössls, a few Orthos, a few Königs, an Erfle or two, a few SWA, a few UWA, a couple SUWA... • CG-5 ASGT, CG-5, & AT Voyager "It's amazing what you can see if you look... " Yogi Berra
Dark Arts Observatory - Brockport, NY - Skyshed POD XL5 with iOptron iEQ45 Mount
Scopes: C8, C5, SV110 ED, EON-72 ED, ST 80, ATRC6, Megrez 90
Meade 16" f/4.5 Lightbridge M42 w/Paracorr & "Crossbow" EQT-200 Equatorial Platform
Meade AR-6 w/10:1 Dual Speed Crayford Focuser
Meade ETX-125 Terabeam/Wegat
Orion ST80 w/single speed Crayford Focuser
CGEM Hypertuned by Deep Space Products
Quote:You might want to check this one out. Runs my fan for days. Small and lightweght.http://www.amazon.com/BESTEK-rechargeable-emergency-blackberry-BTP120A-1/dp/B...
Manuel XT10i, flocked, Moonlite focuser Astroscan 38mm Agena SWA; 30mm Rini; 28mm RKE; 25, 20, 15 & 10mm plossl; 30, 18, 11 & 6.7mm ES 82° N2; 6mm Agena EWA. Garrett Classic 10x50 binoculars. "Human beings make life so interesting. Do you know, that in a universe so full of wonders, they have managed to invent boredom." - Death "Only the night knows I walk hidden within my own shadow." - Vicente Gerbasi "COLLIMATE! COLLIMATE!" - Astronomer Dalek
Quote:Do go to Battery University and read about Lithium Ion batteries and charging. I would charge no higher than 4.1 V per cell. Gene
Quote:A Li-any type battery with that capacity and cost isn't going to live for very long. I'd give it 50 cycles max before its capacity is cut in half.
Quote:If you still want to use Li batteries I recommend HobbyKing.com for batteries. They're not great, but for the money they perform fine for astro stuff and usually live a couple years before a cell goes bad. I like to use the 4s1p 5000mAh lipoly packs connected up to a LDO 12V regulator that I built.
Quote:Do not expect the UltraFire 18650 cells to put out more than about half of their advertised capacity. Gene
Quote: ... 18650 ...
Can this be countered by having 3 pairs wired together for doubling up on capacity? Any similar battery holders around ? I suppose I would need the balanced charger mentioned above.