42 Watt Yard Light Converting it to Battery Solar Power

sam_sam_sam

Badcaps Legend

Join Date: Jul 2011

Posts: 6039

Country: USA
#1

42 Watt Yard Light Converting it to Battery Solar Power

07-21-2018, 07:13 PM

One Part

https://www.ebay.com/itm/400W-DC-DC-...53.m2749.l2649

400W DC-DC Step-up Boost Converter Constant Current Power Supply LED Driver GD
$6.45
Free shipping

Second Part

https://www.ebay.com/itm/LiFePO4-Li-...53.m2749.l2649

LiFePO4 Li-ion Lithium Cell Battery 18650 Protection Board PCB BMS w/ Balance
$17.10
Free shipping

Third Part

https://www.ebay.com/itm/Box-of-80-F...53.m2749.l2649

Fullriver LiFePO4 26650 3.2V 3300mAh Rechargeable Batteries ( New/Old Stock )

$0.68 each box of 80
$0.19 each for shipping

One note on these batteries I load test them a 1.5 amps for about 30 seconds and the voltage on most of them was about 3 volts or better and this was without charging them first

Fourth Part

26650 Li-ion LiFeO4 battery holder frame anti vibration bracket spacer DIY

Last edited by sam_sam_sam; 07-21-2018, 07:47 PM.
Tags: None

Previous template Next

LED Solar Flood Light Dusk to Dawn Security Wall Street Yard Outdoor Lamp modifications are in order

by sam_sam_sam

I bought one about a month ago from an eBay seller who now is out of stock however I found another eBay seller that has the same version of this device so I think about buying a few more of over a period of time

Awhile back I bought some A123 brand 18650 battery cells that are 3.2 volt battery cells that I am going to use in this device for more running time in a florescent bulb fixture that I gutting out the tube sockets and turn it into a solar powered LED lighting fixture instead

Pictures will come later when I have the lighting fixture gutted and have the battery...
- Channel: General Electronics Technical Discussion
08-11-2024, 11:10 AM
Battery Hookup new listing “Case 100x 3.3v 2200mah - 200x 18650 Lifepo4” for $100.00 + shipping

by sam_sam_sam

I bought a case of them the battery cells are made in China the charge curve looks decent for 1 amp charging rate there is also a BMS protection board which here is the website link to them

https://batteryhookup.com/collection...-lifepo4-cells

Here are more of the same but the difference is that they do not have the BMS protection boards but have the tabbing on them

https://batteryhookup.com/collection...o4-power-cells this is...
- Channel: General Electronics Technical Discussion
03-09-2025, 02:30 PM
Help please with identification of few components for troubleshooting (Solar Water Fountain circuit)

by Techie_hobby1

Need some help please with a few components on this small board so that I can troubleshoot the circuit.

The PCB is a Single sided board fairly simple circuitry has a +ve and -ve Solar cell power input, a 7.4v 1500mAh (dual 18630 cell) power in which the Solar panel charges the cells, and lastly the Output goes to a DC connector...
J1 is actually 1P1T Switch (in ON position completes Battery cell circuit
J2 - to DC Output
J3 is Battery cell connector

however I am struggling to identify if:
Y1 (SOT-23) are NPN Transistors, MOSFET's or 11v Zener's....

2 Photos
- Channel: General Electronics Technical Discussion
07-24-2025, 12:43 PM
SOT23-5 LiFePO4 protection IC? 13D1S?

by eccerr0r

I have a SOT23-5 marked

"13D1 S"

I wonder if anyone recognizes this IC? It should be a LiFePO4 protection IC, but having problems finding the datasheet, anyone recognize this?

G00gl3 returns a 6-pin LDO which is not quite right...
- Channel: General Electronics Technical Discussion
05-14-2025, 10:41 AM
Sell or Shim Solar panels?

by eccerr0r

Well, due to my grid tie inverter not accepting high voltages, and the fact that the lions in my solar panels are 36V (72-cell) I think I need to stick with 72-cell.

However I have a few smaller panels that are 36, 32, and two 30-cell. The 36 and 32 together run at 75% efficiency (and subtract more with additional inefficiencies) when running in parallel with the 72-cell panels. The kicker is that the two 30s... generate 0% power when connected in parallel(!)

So now what to do with these small panels?

I could sell them...

Or I could shim them....
- Channel: General Electronics Technical Discussion
03-29-2025, 01:07 AM
Loading...
No more items.

42 Watt Yard Light Converting it to Battery Solar Power

42 Watt Yard Light Converting it to Battery Solar Power

Related Topics