Solar Battery Charger Online » 12v solar battery charger http://solarbatterychargeronline.com Let the sun shine on Mon, 21 Jun 2010 19:57:09 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 I need help on an Electrical Circuit Design ( 12V DC )?http://solarbatterychargeronline.com/i-need-help-on-an-electrical-circuit-design-12v-dc/ http://solarbatterychargeronline.com/i-need-help-on-an-electrical-circuit-design-12v-dc/#comments Mon, 07 Jun 2010 19:41:47 +0000 espo http://solarbatterychargeronline.com/i-need-help-on-an-electrical-circuit-design-12v-dc/

I have a Whole House Generator and I just installed a Solar Battery Charger. What I am trying to design is to be able to read the Voltage from the Solar Panel and from the Battery. I want to be able to read each source ( Solar Panel & Battery ) separately using only one panel mounted DC Voltmeter and one switch if possible. I want the meter to be off until you flip the switch. The Solar Panel will alway be charging the Battery until you read the volts on the meter.

I hope someone can help.

Thank You,
Ned




Solar Battery Charger Home

No tags for this post.

Related posts

  • No related posts.
]]> http://solarbatterychargeronline.com/i-need-help-on-an-electrical-circuit-design-12v-dc/feed/ 2 Can a 5W solar panel directly charge an 18v 1.5 amp NiCd Black and Decker Firestorm battery?http://solarbatterychargeronline.com/can-a-5w-solar-panel-directly-charge-an-18v-1-5-amp-nicd-black-and-decker-firestorm-battery/ http://solarbatterychargeronline.com/can-a-5w-solar-panel-directly-charge-an-18v-1-5-amp-nicd-black-and-decker-firestorm-battery/#comments Thu, 03 Jun 2010 19:43:55 +0000 espo http://solarbatterychargeronline.com/can-a-5w-solar-panel-directly-charge-an-18v-1-5-amp-nicd-black-and-decker-firestorm-battery/ I have a small solar panel which I use to keep a 12V truck battery topped off. It has the following specs (in bright sun).

24Voc
5 watts
350mAmps @ 15V

The actual wall charger for the 18V battery NiCd Firestorm says it produces 21.75Vdc @ 210mAmps

The panel was designed to trickle charge 12V car batteries. What would happen if I connected this solar panel directly to the 18V battery? Could I damage either my solar panel or the NiCd battery? What about the blocking diode, would they work at 18V? Does my panel even have the ability to charge an 18V battery?




Solar Battery Charger Home

No tags for this post.

Related posts

  • No related posts.
]]> http://solarbatterychargeronline.com/can-a-5w-solar-panel-directly-charge-an-18v-1-5-amp-nicd-black-and-decker-firestorm-battery/feed/ 2 will a 15v 52watt solar panel charge four 12c dv 55ah batteries?http://solarbatterychargeronline.com/will-a-15v-52watt-solar-panel-charge-four-12c-dv-55ah-batteries/ http://solarbatterychargeronline.com/will-a-15v-52watt-solar-panel-charge-four-12c-dv-55ah-batteries/#comments Thu, 03 Jun 2010 19:42:26 +0000 espo http://solarbatterychargeronline.com/will-a-15v-52watt-solar-panel-charge-four-12c-dv-55ah-batteries/ I have made a 15v dc 52watt solar panel and I going to be trying to charger 4 12v dc 55ah batteries. I get about 6 hours of sun on my panel. Spec below, is that a big enough panel to charge the batteries???

I have 30 3×6 solar cells wired together Cell Specifications: (Watts): 1.75 Wp (Amps): 3.5 Imax (Volts): 0.5 V max which is where I got my 15g 52watt max (if math is wrong plz tell me) The Battery type: 12Volt 55.0ah NB Sealed Lead Acid Battery. I am using a mppt solar charger.




Solar Battery Charger Home

No tags for this post.

Related posts

  • No related posts.
]]> http://solarbatterychargeronline.com/will-a-15v-52watt-solar-panel-charge-four-12c-dv-55ah-batteries/feed/ 12 Is it possibly to charge a 12v 100ah sealed battery when it is only giving off 5.5v?http://solarbatterychargeronline.com/is-it-possibly-to-charge-a-12v-100ah-sealed-battery-when-it-is-only-giving-off-5-5v/ http://solarbatterychargeronline.com/is-it-possibly-to-charge-a-12v-100ah-sealed-battery-when-it-is-only-giving-off-5-5v/#comments Sun, 30 May 2010 19:37:22 +0000 espo http://solarbatterychargeronline.com/is-it-possibly-to-charge-a-12v-100ah-sealed-battery-when-it-is-only-giving-off-5-5v/ I have a 12v 100ah sealed battery which was given to me. It is around 8 months old. I tested it and it was giving off 5.5v. I tried connecting it to a 35w solar panel (using a regulator) and taking regular readings. It was left for a week and there was still no change to the voltage in the battery.
I then tried connecting it to my car battery charger for a few hours (a 10amp charger) – still the battery will not increase its charge. Is there anything I can do to get it back up to 12v?




Solar Battery Charger Home

No tags for this post.

Related posts

  • No related posts.
]]> http://solarbatterychargeronline.com/is-it-possibly-to-charge-a-12v-100ah-sealed-battery-when-it-is-only-giving-off-5-5v/feed/ 3 How many watts does it take to fully charge a 12 volt battery in 24 hours?http://solarbatterychargeronline.com/how-many-watts-does-it-take-to-fully-charge-a-12-volt-battery-in-24-hours/ http://solarbatterychargeronline.com/how-many-watts-does-it-take-to-fully-charge-a-12-volt-battery-in-24-hours/#comments Wed, 26 May 2010 19:37:46 +0000 espo http://solarbatterychargeronline.com/how-many-watts-does-it-take-to-fully-charge-a-12-volt-battery-in-24-hours/ Talking about a 12v deep cycle battery, as would be used on a trolling motor. Am trying to figure out how large a solar charger I need.
I have seen as large as 6 watts. For whatever reason they do not list the amps. Calculating it, 6 watts at 12v, is .5 amps.




Solar Battery Charger Home

No tags for this post.

Related posts

  • No related posts.
]]> http://solarbatterychargeronline.com/how-many-watts-does-it-take-to-fully-charge-a-12-volt-battery-in-24-hours/feed/ 7 How do you charge a 12v AGM maintenance-free lead-acid battery?http://solarbatterychargeronline.com/how-do-you-charge-a-12v-agm-maintenance-free-lead-acid-battery/ http://solarbatterychargeronline.com/how-do-you-charge-a-12v-agm-maintenance-free-lead-acid-battery/#comments Sat, 22 May 2010 19:49:00 +0000 espo http://solarbatterychargeronline.com/how-do-you-charge-a-12v-agm-maintenance-free-lead-acid-battery/ I am getting a 12v ~12Ah AGM SLA battery for a project. I need to know how to charge it without damaging it. I need to be able to charge it from a wall source, and it would be helpful if I could charge it from solar/generators as well. Can I use any of the following methods? What are the consequences?

Wall power:
-a normal flooded-cell car battery charger?
-some special AGM charger?
-putting 12v in and measuring it manually? while controlling the current? what polarity, (+) to (+) or (+) to (-)?

Alternative charge methods: (less important)
-a solar panel?
-attaching motor to bike and pedaling? backwards?

Additionally, Is desulfation of the battery plates required for AGM batteries? If so, how?

The charging solution has to be cheap (in the $50 range.)




Solar Battery Charger Home

No tags for this post.

Related posts

  • No related posts.
]]> http://solarbatterychargeronline.com/how-do-you-charge-a-12v-agm-maintenance-free-lead-acid-battery/feed/ 1 Want to power this with solar panels?http://solarbatterychargeronline.com/want-to-power-this-with-solar-panels/ http://solarbatterychargeronline.com/want-to-power-this-with-solar-panels/#comments Tue, 18 May 2010 19:37:29 +0000 espo http://solarbatterychargeronline.com/want-to-power-this-with-solar-panels/ I want to build a standalone wifi repeater — powered by the sun. The problem is how much solar power and how big of a battery?

net draw 4.5v @ 0.66A with load
net draw 4.5v @ 0.60A no load

I’m assuming the best choice would be a 6v battery with a a couple diodes in series to induce ~1.5v drop. Then, I need something to charge it — I found 12v 6w solar chargers in the automotive section of Sears and 16v 2w solar chargers in the marine section of Dick’s Sporting Goods.

How many solar panels and what capacity batteries should I use? Is this the best method or should I use a voltage regulator and go with 12v batteries?

I need this to be as cheap and simple as possible…
I never said anything about using an inverter, changing DC into AC back to DC is just stupid…I’m saying to use a REGULATOR which takes a range of higher voltage, unregulated DC and outputs lower voltage, regulated DC. This is how most car-cellphone chagers work (cellphones use 4-6v to chage)




Solar Battery Charger Home

No tags for this post.

Related posts

  • No related posts.
]]> http://solarbatterychargeronline.com/want-to-power-this-with-solar-panels/feed/ 2 1.8W solar charger for charging small things?http://solarbatterychargeronline.com/1-8w-solar-charger-for-charging-small-things/ http://solarbatterychargeronline.com/1-8w-solar-charger-for-charging-small-things/#comments Fri, 14 May 2010 19:49:30 +0000 espo http://solarbatterychargeronline.com/1-8w-solar-charger-for-charging-small-things/ I have a 1.8W Eliminator solar charger (designed to keep a 12V car battery topped up) and it said on the package that it has a built in thing so it won’t reverse charge and drain my battery and I was wondering if I were to use this solar charger to recharge small things like a cell phone, laptop, flashlight, etc. if the reverse charge protector thing built in to the solar charger will work for these things which have much smaller batteries or if it will only work properly on a car battery. I’m not too concerned with it taking a long time to charge these other batteries, I’m mainly worried about overcharging/draining and ruining them. Thanks.




Solar Battery Charger Home

No tags for this post.

Related posts

  • No related posts.
]]> http://solarbatterychargeronline.com/1-8w-solar-charger-for-charging-small-things/feed/ 1 Why is a charge controller not necessary for a 5 watt solar panel?http://solarbatterychargeronline.com/why-is-a-charge-controller-not-necessary-for-a-5-watt-solar-panel/ http://solarbatterychargeronline.com/why-is-a-charge-controller-not-necessary-for-a-5-watt-solar-panel/#comments Mon, 10 May 2010 19:40:36 +0000 espo http://solarbatterychargeronline.com/why-is-a-charge-controller-not-necessary-for-a-5-watt-solar-panel/ My 5 watt solar panel car battery charger manual states that charge controller is not necessary for panels under 15 watts. I’m trying to understand the physics of why that’s the case. Even if my panel is only putting out say 15 volts at 350mA couldn’t it eventually overcharge a battery? What if the 5 watt solar panel were connected to a smaller battery, like a 7amp 12v, could it overcharge that battery? BTW, it has a diode to keep the battery voltage from discharging into the solar panel.




Solar Battery Charger Home

No tags for this post.

Related posts

  • No related posts.
]]> http://solarbatterychargeronline.com/why-is-a-charge-controller-not-necessary-for-a-5-watt-solar-panel/feed/ 2 How do I connect batteries to create a battery bank?http://solarbatterychargeronline.com/how-do-i-connect-batteries-to-create-a-battery-bank/ http://solarbatterychargeronline.com/how-do-i-connect-batteries-to-create-a-battery-bank/#comments Thu, 06 May 2010 19:45:27 +0000 espo http://solarbatterychargeronline.com/how-do-i-connect-batteries-to-create-a-battery-bank/ I have 4 x 110ah 12v batteries with standard terminals.
How do I connect these together to create a 12v battery bank of 440ah?
Also any suggestions on what sort of connectors / bus bars i need?
I was going to speak to an electrician but thought I’d try here first.
Also when wiring is it best to connect positive to positive, negative to negative. I need to keep 12v not 24 as my charger, solar panel and inverter are all designed for 12v.
Thankyou




Solar Battery Charger Home

No tags for this post.

Related posts

  • No related posts.
]]> http://solarbatterychargeronline.com/how-do-i-connect-batteries-to-create-a-battery-bank/feed/ 3