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View Full Version : Does these Solar Battery Chargers really work?


TimTim2008
05-05-2009, 10:09 PM
http://i6.ebayimg.com/01/i/001/35/6a/ab67_1.JPG



Does these Solar Battery Chargers really work?

I was thinking about putting one on each of our riding mowers when not in use (they come with clamps too).. and parked trucks. etc..






Specs

Model Number: 04051

Wattage: 1 watt

Peak Output: 80 mAmps@15 volts

Approx. Watt-Hrs / Day *: 4 - 5

Approx. Amp Hrs / Day *: 0.32 - 0.4

Dimensions: 14" x 3.8" x 1" / 356 mm x 95 mm x 25 mm

Weight: 1.0 lbs / 0.5 kg

Temperature Range: -40?F to 176?F / -40?C to 80?C

TimTim2008
05-20-2009, 01:35 AM
yes, no, maybe?

browningv308
05-20-2009, 07:12 AM
I have used those for years [ mine have clamps that connect directly to the battery terminals ] on my boat, an old tractor and unused batteries that are sitting around and have been very happy never a dead or overcharged battery even leave them out in the rain heat and snow I compare to the battery tender that plugs into the wall

GravelyNut
05-22-2009, 06:54 PM
We've got a bigger one on a tractor like in my Rebuilt Gravely thread. Works well.

topsites
05-23-2009, 01:41 AM
No, not that puny little 1.5 watt POS, you want it to work then you need a solar CHARGER !

This is the one I use:
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=41144

You could probably use that for two mowers at a time, just have to run jumper cables between the batteries.

GravelyNut
05-23-2009, 07:33 AM
No, not that puny little 1.5 watt POS, you want it to work then you need a solar CHARGER !

This is the one I use:
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=41144

You could probably use that for two mowers at a time, just have to run jumper cables between the batteries.
5 watts is better. The one we have is this one: http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_200305091_200305091

lyube
05-23-2009, 06:25 PM
They aren't made to recharge batteries-they do that, but very slowly.

The main thing is to keep the batteries above depleted. When they are depleted, deposits build up on the plates and problems occur.

TimTim2008
09-11-2009, 12:04 AM
they work so far so good

GravelyNut
09-11-2009, 08:43 AM
They aren't made to recharge batteries-they do that, but very slowly.

The main thing is to keep the batteries above depleted. When they are depleted, deposits build up on the plates and problems occur.

The average battery needs about a half amp at 12 volts to be maintained. That figures out to be around 5 to 6 watts. If you start the tractor once a week and leave the charger on it the rest of the time, the 5 watts work fine.

A Gravely 2-wheeler from the late 30s to 76 may have a starter but didn't have a charging system. With one of these panels, its always ready to go. With magneto systems, once running, the engine doesn't need power from a battery to keep going.

TimTim2008
09-11-2009, 09:05 PM
do mowers re-charge the battery when they run?

GravelyNut
09-12-2009, 02:53 AM
do mowers re-charge the battery when they run?

Most do, but not all. No 2 wheel Gravelys as built that used the Gravely engine ever did. Some electric start push mowers also required charging the battery as they had no charging systems built in. Some mowers even did away with the batteries and just plugged into the 110 wall outlet for starting.

fixer67
09-12-2009, 10:22 PM
Most do, but not all. No 2 wheel Gravelys as built that used the Gravely engine ever did. Some electric start push mowers also required charging the battery as they had no charging systems built in. Some mowers even did away with the batteries and just plugged into the 110 wall outlet for starting.


Get a load of this. About a month ago we had two brand new generators in the shop. They had battery electric start but not on board charging system for the battery. You had to plug the little wall transformer into a wall out to charge the battery. Now this is on a generator for crying out loud.

GravelyNut
09-13-2009, 08:58 AM
Get a load of this. About a month ago we had two brand new generators in the shop. They had battery electric start but not on board charging system for the battery. You had to plug the little wall transformer into a wall out to charge the battery. Now this is on a generator for crying out loud.
I'm surprised it didn't have a 110 volt starter.:laugh:
Evem our older (1973) Craftsman recoil start generator has battery charging built in.

grass_cuttin_fool
09-13-2009, 10:45 AM
Get a load of this. About a month ago we had two brand new generators in the shop. They had battery electric start but not on board charging system for the battery. You had to plug the little wall transformer into a wall out to charge the battery. Now this is on a generator for crying out loud.

My Dad just bought a new generator(generac) and it is like that....I was like WTF:hammerhead::dizzy: