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How to CHARGE a CAR BATTERY Tender - Solar Charger - Charging Rechargeable Batteries DIY - DIYdoers

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How to charge a car battery using a portable solar charger as battery tender. Do it yourself charging rechargeable batteries with solar panel trickle charger.
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5 сен 2024

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Комментарии : 71

@Martinko_Pcik Год назад

You don't need a regulator for 1.5W panel. It doesn't have enough power to hurt the battery. On the contrary the added 100w regulator will consume all of the trickle charger power and defeat your setup

@vevenaneathna 9 месяцев назад

ya, probably dont need a regulator for any lead based batteries. would need enough surplus energy to overcome the scaled resistance of the battery at higher voltages, plus they have a lot of thermal mass so not that big of an issue. lithium ion on the other hand usually has pretty low internal resistance in the sub 100mohm range per cell, i would expect that even a low power solar panel could damage them so its probably why the warning is on the package. like trying to overfill a truck tire with a small tire pump, probably wont happen, but you could easily destroy a much larger but thinner weather balloon with the same pump given enough time.

@GodsMan500 4 года назад

I’m pretty sure this will only work on a cigarette lighter socket that stays on when the engine isn’t running. If the socket turns off when you stop the engine (as is true in most modern cars), it is disconnected from the battery.

@mohammedalmatalqa7954 4 года назад

Yeah you totally right .. even modern car after leave it more than 5 hour it disconnected so its better to connect it to the battery directly

@mohammedalmatalqa7954 4 года назад

This will not help for most car .. maybe only new cars cuz once remove the car key it will cut the power thru battrey .. even modern car after leave it more than 5 hour it disconnected so its better to connect it to the battery directly

@altnarrative 4 года назад

That’s correct. My VW Caddy still uses battery in the cigarette port when it’s off though.

@jasonspellich2440 3 года назад

Depends on the car. The "cigarette lighter" might turn off with the car but the additional power ports should stay active. For example in my Yukon the cigarette port turns off but the other 6 ports stay active.

@davoid7914 3 года назад

You need to get your mechanic to make the cigarette lighter socket 'live' so the panel can charge when the ignition is off.

@kg4zyz 8 лет назад

A solar panel with this low level of output doesn't require a charge controller.

@JodBronson 7 лет назад

+kg4zyz - 100% agree!

@AshtrayAnnie 6 лет назад

it does if you don't want an exploded battery

@tullgutten 6 лет назад

If very sunny and not using car you could overcharge it and it might start burning or explode. And the solar panel itself without regulator or diode could draw power from the battery at night. Always use a solar charge controller! (Is MY opinion)

@tullgutten 6 лет назад

If the car sits for several days of course, any overcharge is bad, 12 volt panels usually goes up over 17 volts

@alansach8437 Год назад

Well, you are probably right. But if you are going to leave it for months (over the winter for example) the potential for overcharge is there. That can damage the battery. The instructions that come with the charger recommend a regulator, as mentioned in the video. For 20 bucks, better safe than sorry. Now, if you know for a fact that there is at least a 1.5w (or close) constant drain on your battery (such as an alarm system) then a regulator certainly would not be needed.

@dandragon1st 2 года назад

Just a bit of warning. Regulatora have info writen. Connect batery first than solar panel. You might have damaged the regulator.

@TonyCiobanu Год назад

Bought same solar charger in the UK rebranded Halfords and I've left my 1.4 Civic 7 months connected and started immediately. No regulator/controller used as it is mentioned on nu the box that this will stop charging once the battery will reach the max power.

@stevewimmer8285 Год назад

And this does not have enough current to get the battery boiling to wreck it…now I hooked up a battery maintainer and strapped it to the grill. It gets plugged in…no more problems.

@EstesRanch 5 лет назад

Simply trim off the “excess” wire and avoid having to tape it. Detailed video. Thanks for posting

@williamheckman4597 7 лет назад

I wonder what would happen if you stacked these either in parallel or in series... what kind of out put could you get ?

@LastExile1989 6 лет назад

William Heckman with 5 panels you'd max at 7.5w 0.31a.

@j.b.335 5 лет назад

I'm no electrician , but I'm thinking the internal circuitry wouldn't be able to handle the increase of voltage or amperage that would come with tying multiple units together ... Would also probably depend on how it's fuse protected .. if any ??

@transam8607 5 лет назад

I wander now the same thing I don't know y I didn't think of this simple idea great idea and I pretty much come out with a solution every time. Some times I would say the smartest people miss out the simplest Solutions not saying I'm the smartest but I have a good common sense excellent point you made thumbs up👍

@captainkangaroo4301 4 года назад

That little LED light on the unit probably wastes 25% of the juice it creates.

@alansach8437 Год назад

Crazy, huh! But it is a trickle charger, just for maintenance, not charging.

@sim6699 8 лет назад

Your solar panel outputs 125mah, meaning any 12v battery 1.25 amp or larger does not need a charge controller

@Baerchenization 7 лет назад

Yeah, utter nonsense... it takes 238 years to charge a car battery with that solar panel - which is why the instructions that typically come with it say that it IS NOT a charger, but a charge maintainer... my panel outputs twice as much as his and it says it cannot charge a battery. Well, and it cannot.

@ARF.Racing 7 лет назад

Nearly every bit of power if not all of it that he is producing from that small 1.5w panel is being spent running the charge controller and the 4 LEDS (2 always powered). Battery will most likely recieve so little or no power and he is right back to having no maintainer attached to the 12v battery in his vehicle, but is out the 40-50 dollars spent on equipment. lol

@michael102 6 лет назад

I am almost 100% certain that that solar panel doesn't put out 1.25 amps. Now 0.125 amp is more like it.

@jivantakirstenpillay6128 6 месяцев назад

I also have a 1.5W Charger connected on my car in the garage, and getting sunlight through the window, so maybe just 6hrs of direct sunlight. Never needed a regulator and battery is fine for the last 5 yrs. On a small charger like this I don't think it can harm the battery. Unless you getting 24Hr sunlight, LOL

@PhaQ2 8 лет назад

That HF solar panel has a blue LED that makes the panel useless in low level light. Cut one leg to it and you will unlock the full potential of that panel.

@MrWhaatay 8 лет назад

+Pha Q The LED draws so little current as to be negligible.

@PhaQ2 8 лет назад

Whatatay T During overcast days, that LED renders low level light useless.

@MrWhaatay 8 лет назад

+Pha Q So does putting it in a closet it with no lights or windows. These things fail and I would rather see the LED on to know it is working.

@PhaQ2 8 лет назад

Whatatay T I understand you have a preference. This advice is solely for those of us receiving low levels of sunlight due to constant cloud cover or low sun angle. In these conditions doing this modification will improve the effective output. I hope this clears things up for you.

@PhaQ2 8 лет назад

Whatatay T I own a volt meter, so I do not need a blue flashing L.E.D. sucking up useful power.

@stevewimmer8285 Год назад

I have some! It will not charge. It will keep a battery up if the battery has a good charge on it!

@kenphillips8239 8 лет назад

Hi You dont need a regulator because your panel wattage is very low. Solar Kenn

@TheBlackDog73 4 года назад

Can you leave it plugged in a parked car for a year and not have to worry about it?

@alansach8437 Год назад

@@TheBlackDog73 Probably not. The instructions that come with the charger recommend a regulator. For twenty bucks (price of the regulator) may as well be safe rather than sorry. I'm using one to maintain my start battery in my RV that doesn't get started from October through April.

@emil.honganmaki5461 3 месяца назад

@@alansach8437 you don't need a controller to be on the panel, you can always be plugged in.. the controller is only recommended to get money from people

@emil.honganmaki5461 Месяц назад

@@TheBlackDog73 no need to disconnect

@emil.honganmaki5461 Год назад

The power of this panel is lost to that regulator. i.e. you can connect to the battery without a regulator, the power of the panel is not enough for overcharging.

@TemplarX2 5 лет назад

Too low for a charge controller. 10 W plus for a charge controller.

@alansach8437 Год назад

The instructions that come with the charger recommend a regulator.

@617bw9 4 года назад

Behind every good man there is a women more than willing to interrupt and give advice and opinion !

@LA-Creative Год назад

She is a good woman! Who thinks it’s dang super shady that the SAE plug was cut off and has learned how to handle that mansplaining tone like a pro! 🤣🤣

@LA-Creative Год назад

Cool video! I love your sidekick. One question aren’t the controllers mostly for bare solar panels? I think the trickle charger panels have them built in right?

@doraexplora9046 Год назад

Connect this solar panel straight to your battery through the firewall and grommet. No need for a charge controller as the wattage is way to low to over charge the battery. i wouldn't stick it to the windshield. I would simply put it on the dashboard, and let it maintain charge, and then disconnect it and put it away with your sun shade. seriously, how often are you going to use this thing? A normal start battery can last 1-2 weeks without being charged and still start your car. Maybe if you have a Super Capacitor for starting and regulation of the supply or some other non-std device, or you let your car sit for weeks at a time, that causes a drain, you don't really need these things.

@alansach8437 Год назад

These are perfect for maintaining the start battery on an rv that is parked all winter. Not much use for anything else (maybe a lawn mower battery, again, sitting all winter).

@Pinkielover 2 года назад

get the 40 in by 13 inch panel goes right in car window .

@atdit 8 лет назад

1.5 Watt is nothing. That's like 125mA. Would take 400h of full sunshine to charge a car battery

@drEmulatorMadmax 8 лет назад

lol ye i foolishly bought one of these years ago and iirc it kicked out 70 mah i then foolishly bought a 2.4 watt version from maplins and that kicked out about 120mah in full sunlight, even combining the + to the + and the - to the - (i'e joining them in parallel) didn't make much difference (probably about 189 mah ) dam i still feel ripped off :-( but panels where expensive (i didn't have the internet then) ii rc an 80watt was about £200 or 260.69 US Dollars saying that though maplins (a electronics store in the uk) still charges £324.99 or 423.61 US Dollar for 150W Solar Panel Kit, which makes me chuckle as i'm about to buy two 150 watt panels off of ebay for £259.98

@chetgravatt9562 6 лет назад

That is true but this is a 100 watt unit not 1.5. You are commenting on the wrong unit :)

@alansach8437 Год назад

Not meant to charge. Meant to maintain.

@kenwesters7834 4 года назад

You won't need a charge controller. Its only a 1.5 watt panel! It will take forever!

@robotik2066 5 лет назад

The panel too small not enough power, you need bigger panel at least 30W power to charge battery. I wonder why they still sell to people, don't they do an experiment before production massive to the market.

@mel2000 4 года назад

These devices are meant to "maintain" a battery charge for cars that have a slow battery drain leak. They're not meant to charge a battery.

@trackpackgt877 2 года назад

Man that low of a wattage you really don't need a charge controller 1.5 Watt you're probably using up all the power running the controller it's probably a wash I'd be surprised if it actually keeps your battery charged

@fester831 8 лет назад

Would this be too powerful to charger cell phones and gopro batteries?

@jimsteele7108 8 лет назад

they are a joke. you will activate the charge sign on your smartphone but it will not charge the battery.

@ARF.Racing 7 лет назад

You actually have to make modifications to the thing by adding a item which will lower voltage and increase amperage. Also would never full sun. If you modifiy it that way you can lower the voltage to around 12.7v and increase the amperage slightly and with full sun charge a phone. but only in full sun.

@michael102 6 лет назад

You can charge your battery and then use a voltage reducer to reduce 12v to 5v. You can not directly charge your phone or electronics directly to a solar panel, as voltage and amperage fluctuates. You pretty much need 5v on your phone or it stops the phone from charging to keep your phone from frying.

@voidisyinyangvoidisyinyang885 5 лет назад

you can buy a 5 volt regulator - and that will increase the amperage to charge a phone. Somebody commented: I got a five volt regulator and a female usb cable

@draimomdpdr 4 года назад

Probably going to get less than 2 amps so it will be fine. Check it with a multimeter when set up and compare results to the specs on a mobile phone charger for example