HQ 1.5 W Solar Trickle Charger £5.83 @ Amazon
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HQ 1.5 W Solar Trickle Charger £5.83 @ Amazon

37
Found 6th Jan 2014
Great deal this, I ordered 2 as we go camping quite a lot and this unit charges 12v Car/Caravan batteries solar - Confirmed Delivered ! - its a nice size panel, tested it and even in the dim light we have at present works a treat - pretty sure Amazon have the price on this wrong as all the other sellers are in the £20 mark !! Happy buying....

37 Comments

mod

Thanks for posting. I’ve added the price and merchant to the title.
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Original Poster

Thanks Andrew (bit new to this).

So you have one already and it works well?

3-4 weeks

£15 and £4.59 postage now when I click on the link, shame as this would have been worth a shot

Banned

15 quid now + 4.59 postage

toshapetriji

15 quid now + 4.59 postage

look for amazon as the seller.. to the right

Banned

bluetiger_grr

look for amazon as the seller.. to the right



Oh yeah sorry bout that

Delivery 25th-30th jan
Still ordered 2 tho.

1.5W is enough to charge a couple of AA batteries. Trickle is quite an understatement. If your van battery goes flat you probably need 2 days of full sun to start the cab.

I have one, my car still starts after 2 weeks in full sub zero winter, it didn't before. It will help offset an alarm being on but I wouldn't bet on my car starting after a month with this on.

LadyEleanor

1.5W is enough to charge a couple of AA batteries. Trickle is quite an … 1.5W is enough to charge a couple of AA batteries. Trickle is quite an understatement. If your van battery goes flat you probably need 2 days of full sun to start the cab.



Great for just over a fiver thats amazing

I think the point of these is simply to keep the battery topped up to offset the power used by alarm/immobiliser circuits etc rather than to charge a flat battery ..... it's surprising how much the power level of a battery can drop in a car battery over 2 weeks parked in cold weather

LadyEleanor

1.5W is enough to charge a couple of AA batteries. Trickle is quite an … 1.5W is enough to charge a couple of AA batteries. Trickle is quite an understatement. If your van battery goes flat you probably need 2 days of full sun to start the cab.



More like 2 months.

1.5w is 0.125amps of current every hour. Say we have 8hr of usable sunshine (i know we are in the UK not California) that gives us 1 amp a day of power. Sixty days gives us 60amps to start a car/van. That all assumes we get full power for 8hr a day and the battery stores every last drop which it doesnt.

This is good to run some led lights for a few hours.

£9:99 in Maplins so good value here.

I go Camping too .... but 1.5Watts just doesn't cut it really.

Buy 2 or 3 and parrallel them up ...

Says £19.97 now anyway. Rgment over

Like I said .... £9:99 in Maplins

Can this be adapted to charge other devices you might take camping with you? Small lights, batteries, phone?

Sorry didnt read the other posts from other sellers. Ill stay off the drugs for a while and then return

I intend to do a fair bit of camping this year, with a smallish lead acid battery and a couple of these, should be suitable for powering small things.

Thanks op!

These type of panels require direct sunlight to get the maximum 1.5 watts, anything other than clear skies will reduce the output of it.
1.5 watts @ 12 v = 0.125 amps so you would need 8 hours of clear sunny skies to put 1 amp back into an 80 amp battery.
It should be fine for smaller items, such as mobile phones, satnavs etc that are less power hungry

Ordered and voted HOT



Worth a try.



Thanks

Ordered thanks, should work well to keep a trail cam charged for a while.

greenecho

Can this be adapted to charge other devices you might take camping with … Can this be adapted to charge other devices you might take camping with you? Small lights, batteries, phone?



not worth it as the peak outputs 17 volts, it isn't regulated as it is fine for lead acid batteries with the ampage it kicks out.

greenecho

Can this be adapted to charge other devices you might take camping with … Can this be adapted to charge other devices you might take camping with you? Small lights, batteries, phone?


I clicked for this exact reason.. It's not even worth tearing it down and using it in a hobbyists project as a battery / smartphone charger. As you can pickup smaller solar panels with more power than this thing

It's only use would be to keep a really dodgy car battery topped off.
But to be fair you would be far better off using the money to replace it
Edited by: "Azurren" 6th Jan 2014

bluetiger_grr

look for amazon as the seller.. to the right



Doh! Cheers and have some heat

I use it on my motorbike battery, seems to make a difference, although in this cold weather and not using it at all I've got it out of the chassis and on the worktop on a proper trickle charger due to lack of sun.

Good price, although make sure you don't drop it! I've had to replace mine because it slipped and cracked and was knackered

I use one of these to keep maintain a fully charged up car battery. You can't use one to charge a battery that has gone flat.

amperage is the flow of charge.. so an amp-hour is a useful unit of charge - i.e. the effect of an amp flowing for an hour.

a car battery holds, say, 40 amp hours. You can discharge it at 40 amps for one hour, or one amp for 40 hours.

likewise, watts is flow of energy, i.e. power... so a watt hour is a unit of energy - the effect of one watt flowing for an hour.

A car battery is notionally 12V, so it can store 480WH of energy, that's a lot!

this charger produces 1.5W, so to recharge that car battery, even assuming it produces 13V, will take 480 / 1.5 = 320 hours, and since it only works during the day, would take two months!

a smartphone battery might be 1500mAh, with 3.3V chemistry that's roughly five watt hours, so it would take about 3 to four hours to charge with that battery. assuming the light was really strong. and there were no losses in conversion, resistive losses in wires.


this has been a public service broadcast by the "XKCD 386" fan club.
xkcd.com/386/

--edit-- improved my assumption about smartphone battery
Edited by: "speculatrix" 6th Jan 2014

speculatrix

amperage is the flow of charge.. so an amp-hour is a useful unit of … amperage is the flow of charge.. so an amp-hour is a useful unit of charge - i.e. the effect of an amp flowing for an hour.a car battery holds, say, 40 amp hours. You can discharge it at 40 amps for one hour, or one amp for 40 hours. likewise, watts is flow of energy, i.e. power... so a watt hour is a unit of energy - the effect of one watt flowing for an hour.A car battery is notionally 12V, so it can store 480WH of energy, that's a lot!this charger produces 1.5W, so to recharge that car battery, even assuming it produces 13V, will take 480 / 1.5 = 320 hours, and since it only works during the day, would take two months!a smartphone battery might be 1500mAh, with 3.3V chemistry that's roughly five watt hours, so it would take about 3 to four hours to charge with that battery. assuming the light was really strong. and there were no losses in conversion, resistive losses in wires.this has been a public service broadcast by the "XKCD 386" fan club.http://xkcd.com/386/--edit-- improved my assumption about smartphone battery


Good breakdown! Just remember that additional losses will occur when down-volting from 12v to 5v to charge a smartphone via USB
Potentially even more if the battery requires less / more voltage to charge, forcing the phone to modify the voltage again

Assuming that the solar panel even outputs 1.5w, factoring in even the best case efficiency of about 95% (When decreasing the voltage) charging a phone from only 285ma is.. Well.. Impractical. You would almost certainly have to turn your phone OFF before the battery will even begin the charge.

About half as fast as charging from your PC's USB port. So about 11hours to fully charge a Samsung Galaxy S4 (While off) in bright sunlight! ¬_¬

Just sharing the above as this is why I clicked this deal in the first place..
9gag.com/gag…441

speculatrix

would take two months!



I already said that a few posts before you.
Reminds me of a blonde joke - How many blondes does it take to change a lightbulb...........

mine arrived. build quality good.

Waste of time as 1 month after ordering from Amazon still see delivery dates stretching further out and one day delivery will be a real surprise

Well, 4 months later and Amazon continue to move out my delivery date !!!!
Anyone with similar experience and how Amazon do not seem to be bothered by their failiure to deliver as ordered !!!!

Note I also while waiting purchased same item from Maplin and, modifying conenctors to go direct to lugs on a car battery, whilst appreciating the generated current is low, was concerning to find just 5 strands of very thin copper in each connecting cable.

Did anyone received it yet?
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