markmm
100 mW
hello all,
Hope you are well. I am admittedly new and dumb at this. I need help wiring (and then properly charging) 16 headway 38120S 10ah lifepo4 cells to be 35ah or better, ultimately to power a 12 volt boat trolling motor (which is 62lb thrust)
I sound like i know more than i do but the story is:
1) What i built before to power things:
8 cell pack of headway 38120S 10ah lifepo4's, with a 50 watt solar panel to charge it when not in use. Also has a solar charge controller to manage that. (The final product is basically like this:
or http://laserhacker.com/?p=92). It worked well but had no stamina compared to the interstate 35Ah deep cycle battery (DCM0035 agm deep cycle: https://www.amazon.com/gp/product/B005CLPOQM/ref=oh_aui_search_detailpage?ie=UTF8&psc=1) that i am now trying to replace with these headway lifepo4 cells.
2) What I am trying to build now:
Just want to upgrade the above to be 35Ah or better. To match the deep cycle, was told i needed to increase the Ah and add 8 more batteries to arrive at 16 total headway 38120S 10ah lifepos cells for a 40Ah battery pack.
3) What i want to power with new battery pack: 62lb thrust electric trolling motor, DC 12V
http://newportvessels.com/electric-trolling-motor-62lb-thrust-saltwater-l-series/
4) problem A:
I need to know how to connect the cells (as my attempts have not done what i wanted.) i can put 4 cells in series and get 12 volts. But i need to add the 12 or 14 remaining cells i have to get 35Ah or more but keep it all at 12 volts to hopefully get the stamina of the interstate 35Ah battery. And i want the batteries in more of a cube shape rather than a long line of batteries of course.
5) big problem B:
i got the new Lifepo4 cells. But I likely ruined some or most of them since i was trying to charge them all, and i wired them all up as parallel and attached a standard agm/6/12v battery charger to charge them. (This is the charger: Schumacher SC-1200A-CA SpeedCharge 12Amp 6/12V Fully Automatic Battery Charger at: https://www.amazon.com/gp/product/B000BQSIWK/ref=oh_aui_search_detailpage?ie=UTF8&psc=1).
Now i have 4 of the cells that still show 3.3 or so volts with a multimeter, 4 or 5 of those cells that show anywhere from 2.0 and 2.6v, and the rest of them seem to show between .500mv and like 1.8v.
6) how many of those cells are not ruined and how many are not ruined and recoverable ?
7) if any are recoverable, how?
8) guess there is something about balancing the cell? Not sure how or why. My previous 8 cell build did fine and I never balanced it and it charged with the solar panel.
Then once and if i have to get new replacement cells, how to wire it up, as described in #4 above.
MANY THANKS in advance with any insight you can share.
Other info Fwiw
https://m.youtube.com/watch?v=erS3b22FgmU
Lifepo4 cell info is pasted at this symbol §§§§§ below, or visit here: http://www.evassemble.com/index.php?main_page=product_info&products_id=18
--------------------------
§§§§§
Model: Headway 38120S 10ah cell
Type
38120S
chemical composition
LiFePO4
Nominal Capacity
10Ah
Charging voltage
3.65V
Nominal Voltage
3.2V
Cut-off Discharge Voltage
2.0V
Charging Method
CC/CV
Maximum Discharge Current(continuable)
100A
Maximum Charge Current(continuable)
50A
Cycle Life
1500cycles 1C 100%DOD
2000cycles 1C 80%DOD
Work temperature
Charge -10℃?~ 45℃
Discharge -20℃?~ 65℃
Energy Density
105 Wh/Kg
Initial Internal Impedance
<4mΩ
Dimension(mm)
Diameter
38mm
Length
120mm(152 with screw)
Weight(g)
360
Dimensions of 38120S holder:80x40mm
38120S,38120HP,38140S use same #38 holder
?Shipment can be issue out on 1-3 days after Payment
--------------------------
****
62lb Thrust Newport Vessels Trolling Motor
Shaft Length 40 Inch Adjustable
Volt 12-Volt
Max Amp Draw 58 Amps
Battery
(not included) 12-Volt Deep Cycle or Marine
Circuit Breaker
(not included) 60 Amp Manual Reset
Compatibility Saltwater/Freshwater
Mount Type Durable Nylon Transom Mount
Handle Standard
Speeds 5 Forward & 3 Reverse Speeds
Battery Meter 10 Point Battery Meter
Max Vessel Size 10.5ft-12ft
Motor Weight 23lbs
Shipping Weight 25lbs
Shipping
Dimensions 55" x 20" x 6"
Included Propeller 3 Blade Large Prop
Motor Material Stainless Steel Hardware for
Saltwater
Shaft Material Fiberglass Composite
Max Speed
on 7.5ft Boat 11.19mph
Warranty 1 Year Limited Warranty
++++++++++++++++++++++++++++++++
Hope you are well. I am admittedly new and dumb at this. I need help wiring (and then properly charging) 16 headway 38120S 10ah lifepo4 cells to be 35ah or better, ultimately to power a 12 volt boat trolling motor (which is 62lb thrust)
I sound like i know more than i do but the story is:
1) What i built before to power things:
8 cell pack of headway 38120S 10ah lifepo4's, with a 50 watt solar panel to charge it when not in use. Also has a solar charge controller to manage that. (The final product is basically like this:
or http://laserhacker.com/?p=92). It worked well but had no stamina compared to the interstate 35Ah deep cycle battery (DCM0035 agm deep cycle: https://www.amazon.com/gp/product/B005CLPOQM/ref=oh_aui_search_detailpage?ie=UTF8&psc=1) that i am now trying to replace with these headway lifepo4 cells.
2) What I am trying to build now:
Just want to upgrade the above to be 35Ah or better. To match the deep cycle, was told i needed to increase the Ah and add 8 more batteries to arrive at 16 total headway 38120S 10ah lifepos cells for a 40Ah battery pack.
3) What i want to power with new battery pack: 62lb thrust electric trolling motor, DC 12V
http://newportvessels.com/electric-trolling-motor-62lb-thrust-saltwater-l-series/
4) problem A:
I need to know how to connect the cells (as my attempts have not done what i wanted.) i can put 4 cells in series and get 12 volts. But i need to add the 12 or 14 remaining cells i have to get 35Ah or more but keep it all at 12 volts to hopefully get the stamina of the interstate 35Ah battery. And i want the batteries in more of a cube shape rather than a long line of batteries of course.
5) big problem B:
i got the new Lifepo4 cells. But I likely ruined some or most of them since i was trying to charge them all, and i wired them all up as parallel and attached a standard agm/6/12v battery charger to charge them. (This is the charger: Schumacher SC-1200A-CA SpeedCharge 12Amp 6/12V Fully Automatic Battery Charger at: https://www.amazon.com/gp/product/B000BQSIWK/ref=oh_aui_search_detailpage?ie=UTF8&psc=1).
Now i have 4 of the cells that still show 3.3 or so volts with a multimeter, 4 or 5 of those cells that show anywhere from 2.0 and 2.6v, and the rest of them seem to show between .500mv and like 1.8v.
6) how many of those cells are not ruined and how many are not ruined and recoverable ?
7) if any are recoverable, how?
8) guess there is something about balancing the cell? Not sure how or why. My previous 8 cell build did fine and I never balanced it and it charged with the solar panel.
Then once and if i have to get new replacement cells, how to wire it up, as described in #4 above.
MANY THANKS in advance with any insight you can share.
Other info Fwiw
https://m.youtube.com/watch?v=erS3b22FgmU
Lifepo4 cell info is pasted at this symbol §§§§§ below, or visit here: http://www.evassemble.com/index.php?main_page=product_info&products_id=18
--------------------------
§§§§§
Model: Headway 38120S 10ah cell
Type
38120S
chemical composition
LiFePO4
Nominal Capacity
10Ah
Charging voltage
3.65V
Nominal Voltage
3.2V
Cut-off Discharge Voltage
2.0V
Charging Method
CC/CV
Maximum Discharge Current(continuable)
100A
Maximum Charge Current(continuable)
50A
Cycle Life
1500cycles 1C 100%DOD
2000cycles 1C 80%DOD
Work temperature
Charge -10℃?~ 45℃
Discharge -20℃?~ 65℃
Energy Density
105 Wh/Kg
Initial Internal Impedance
<4mΩ
Dimension(mm)
Diameter
38mm
Length
120mm(152 with screw)
Weight(g)
360
Dimensions of 38120S holder:80x40mm
38120S,38120HP,38140S use same #38 holder
?Shipment can be issue out on 1-3 days after Payment
--------------------------
****
62lb Thrust Newport Vessels Trolling Motor
Shaft Length 40 Inch Adjustable
Volt 12-Volt
Max Amp Draw 58 Amps
Battery
(not included) 12-Volt Deep Cycle or Marine
Circuit Breaker
(not included) 60 Amp Manual Reset
Compatibility Saltwater/Freshwater
Mount Type Durable Nylon Transom Mount
Handle Standard
Speeds 5 Forward & 3 Reverse Speeds
Battery Meter 10 Point Battery Meter
Max Vessel Size 10.5ft-12ft
Motor Weight 23lbs
Shipping Weight 25lbs
Shipping
Dimensions 55" x 20" x 6"
Included Propeller 3 Blade Large Prop
Motor Material Stainless Steel Hardware for
Saltwater
Shaft Material Fiberglass Composite
Max Speed
on 7.5ft Boat 11.19mph
Warranty 1 Year Limited Warranty
++++++++++++++++++++++++++++++++