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Batteries

Posted: May 20 2010 7:32 pm
by kevinweitzel75
I received an email that said if you take a 6volt lantern battery and pop the top, you will find 36 AA batteries inside. Now if you add up the cost considering 36 AA batteries will cost you about $15 or more and a 6volt battery costs $6, you would save some money. Has anybody heard of this? Or has anybody acually tried this? :? I'm not so sure about this.

Re: Batteries

Posted: May 23 2010 5:50 pm
by The_Eagle
I bought the Sanyo eneloop based on rave recomendations. 4-AA 2,000 mAh NiMH, w/ a charger for about $20.
http://www.amazon.com/Sanyo-Eneloop-Pre ... ikearizona
They will easily last for a full day in my GPS.

Re: Batteries

Posted: May 28 2010 9:07 pm
by pencak
I use the rechargeable batteries and they work great.
I've been testing a solar unit
http://hikearizona.com/photo.php?ZIP=131668
for multi-day trips with my GPS and it seems to be working.

Re: Batteries

Posted: May 29 2010 10:51 am
by kevinweitzel75
pencak wrote:I've been testing a solar unit
That looks pretty cool. How much does it weigh? Never have to worry about bringing extra batteries.

Re: Batteries

Posted: May 29 2010 2:52 pm
by PLC92084
Pencak:

What brand solar charger are you using? Does it have an internal battery? I made the mistake of trying a "cheap" model. It didn't work with my Motorola phone or iPod... Testimonials readily accepted!!

Re: Batteries

Posted: Jun 09 2010 9:07 pm
by pencak
PLC92084 wrote:Pencak:
What brand solar charger are you using? Does it have an internal battery? I made the mistake of trying a "cheap" model. It didn't work with my Motorola phone or iPod... Testimonials readily accepted!!
It's a large Solio unit. I use the USB female connector on the small cord built into the Solio. The battery holder unit is a small plastic USB (male connector) 2 AA battery charger from Rayovac. The whole thing, with 2 Sony 2000mAH NI-MH AA batteries weighs in at 8.125oz. The Solio unit has an integrated battery so I don't have to have it hooked up. I just have to strap it to the pack and point it at the sun. Depending on the sun, the thing will easily charge the on board battery in a matter of hours. From there, I can change the batteries plugged into the Rayovac USB holder at night. Works like a charm. I have these rechargables in my camera, headlamp and GPS. They last longer than regular batteries. The headlamp runs a long time (probably 3 weeks of nightly use) and the power hog GPS runs for more than one and not quite two days. The camera seems to last forever and I use it constantly for work. I usually, give them a deep cycle charge from 110v outlet unit at home before I leave. For home, I use a Kodak unit for that because it will do 4 batteries at a time and it has a display on the charging status of each battery. 3 hours and it's done. I can also pre-charge the internal battery on the Solio unit with a special adapter cord to connect into a USB. Of course, I have to charge that off of a computer. You can get an adapter made just for the iPod or iPhone for this Solio unit. I like it. It seems to work.

I'll know for sure how good it is for anything longer than a 4 day trip in July, I'm taking this setup on a 9 day trip. This will put it through it's paces. I'm pretty confident it will work well.

Re: Batteries

Posted: Jun 10 2010 4:29 pm
by Jeffshadows
I've been messing with a solar unit, as well. It seems to work okay for topping-up things that had a full charge but are slightly depleted, but it takes forever to charge something that has been almost or completely discharged...

Re: Batteries

Posted: Jun 11 2010 12:15 pm
by Thoreau
pencak wrote:
PLC92084 wrote:Pencak:
What brand solar charger are you using? Does it have an internal battery? I made the mistake of trying a "cheap" model. It didn't work with my Motorola phone or iPod... Testimonials readily accepted!!
It's a large Solio unit. I use the USB female connector on the small cord built into the Solio. The battery holder unit is a small plastic USB (male connector) 2 AA battery charger from Rayovac. The whole thing, with 2 Sony 2000mAH NI-MH AA batteries weighs in at 8.125oz. The Solio unit has an integrated battery so I don't have to have it hooked up. I just have to strap it to the pack and point it at the sun. Depending on the sun, the thing will easily charge the on board battery in a matter of hours. From there, I can change the batteries plugged into the Rayovac USB holder at night. Works like a charm. I have these rechargables in my camera, headlamp and GPS. They last longer than regular batteries. The headlamp runs a long time (probably 3 weeks of nightly use) and the power hog GPS runs for more than one and not quite two days. The camera seems to last forever and I use it constantly for work. I usually, give them a deep cycle charge from 110v outlet unit at home before I leave. For home, I use a Kodak unit for that because it will do 4 batteries at a time and it has a display on the charging status of each battery. 3 hours and it's done. I can also pre-charge the internal battery on the Solio unit with a special adapter cord to connect into a USB. Of course, I have to charge that off of a computer. You can get an adapter made just for the iPod or iPhone for this Solio unit. I like it. It seems to work.

I'll know for sure how good it is for anything longer than a 4 day trip in July, I'm taking this setup on a 9 day trip. This will put it through it's paces. I'm pretty confident it will work well.
Glad to hear good reports from solar devices in the field. I've been on the fence just because I hadn't heard much good about most of them. I think I may just have to play copycat and give that rig a try as well in the near future.

Re: Batteries

Posted: Jun 11 2010 2:30 pm
by PLC92084
The Solio unit looks pretty robust and not overly heavy. My complaint (with the one's I've tried, anyway...) are with devices that require drivers or proprietary units to charge (like iPods, cell phones, etc.). When plugged into the charger, they just sit there; they don't start charging. Same thing when you plug them into a computer without the proper driver installed. I've left them plugged in for hours and... nothing. If I get a testimonial for a unit that definitely works, I'm on it!! :y:

Re: Batteries

Posted: Jun 11 2010 2:39 pm
by Thoreau
Any idea if that Rayovac USB charger can safely charge Sanyo Eneloops?

Re: Batteries

Posted: Jul 17 2010 10:24 pm
by pencak
A quick note on that battery charger setup with the Solio I have. I didn't work as planned on my 9 day Sierra hike. On the 4th day I could only get a half charge on the two AA batteries. This was insufficient to run the GPS for a full day. I think the glitch is in the Rayovac USB charger. It seems to shut off prematurely. I really wish Solio made a AA charger specifically for their unit. I know that thing charges up completely with relatively little sunlight.

Re: Batteries

Posted: Jul 19 2010 8:54 am
by Jeffshadows
There was an article on Mother Earth News, or somewhere, about how to make a "universal" charging cradle for most small, roll-out panel packs. It works like a charm. I'll dig the link up or post a PDF, if possible...