Reddit reviews NPP NPD12-200Ah Rechargeable Deep Cycle 4D SLA 12V 200Ah Battery with Button Style Terminals
We found 2 Reddit comments about NPP NPD12-200Ah Rechargeable Deep Cycle 4D SLA 12V 200Ah Battery with Button Style Terminals. Here are the top ones, ranked by their Reddit score.
CERTIFICATION - ISO9001, ISO14001, CE, and UL CertifiedBATTERY TYPE - 12V 200 Amp 4D Rechargeable Sealed Lead Acid Deep Cycle Battery With Button Style TerminalsAPPLICATION - Alarm System, Emergency Lighting System, Firefighting Equipment, Standby Power Supply and Telephone Switching System, Uninterrupted Power Supply, Telecommunication System, Computer Standby Power Supply System, Solar and Wind Power storage Etc....RUGGED DESIGN - The battery case is made from a Non-Conductive ABS plastic, Strong Resistance to Shock, Vibration, Chemicals, Weather and Heat. Very easy to install and requires no maintenance.100% SATISFACTION GUARANTEED: We back all our batteries with our 30 DAY MONEY BACK GUARANTEE and our 1 year manufacturer defect warranty. Please see warranty details at product description.
Your charge controller is too small and you need an MPPT charge controller.
Forget the 100w pv modules look for 250w modules.
Battery is too small.
Inverter is too big, look for a 200w
If you are doing this for fun, fine. But if you are planning to save money just forget about it. An off grid system will not save you any money.
Edit: add more detail:
to clarify some. Your pump uses 1.728 kWh/day and your battery has just 0.36kWh of storage. Worse you don't want to drain the battery more than 50%.
http://everydaycalculation.com/ah-kilowatt-hour.php
So what you will need is something along the lines of this:
https://www.amazon.com/NPP-Rechargeable-Sealed-Battery-Terminals/dp/B01J94RBDG/ref=sr_1_sc_3?s=electronics&ie=UTF8&qid=1504614762&sr=1-3-spell&keywords=deep+cyclebattery+200ah
The Charge Controller is PWM and rated for 30amps. This is the output amps so at the battery voltage of 12V in your case. 30A X 12V = 360watts
What you need is something like this that is MPPT:
https://www.amazon.com/Renogy-Commander-Solar-Charge-Controller/dp/B01DCTMAK8/ref=sr_1_16?s=lawn-garden&ie=UTF8&qid=1504615016&sr=1-16&keywords=mppt+solar+charge+controller
An MPPT CC can handle higher input voltages so you can make a string of higher voltage modules, other wise you have to keep them all in parallel and use fuses between the strings. The efficiency is higher as well.
Now you could make the whole thing simpler by going with a 24V battery which would require an inverter like this: https://www.amazon.com/COTEK-SK200-124-200W-Pure-Inverter/dp/B006W9I7S0/ref=sr_1_6?s=lawn-garden&ie=UTF8&qid=1504615205&sr=1-6&keywords=200w+inverter+24V
I went way different then others and used 4D batteries. I got two NPD12 200ah 12v batteries (Amazon link) and have them in parallel. I built a battery box under the bed and they both fit longways along the width of the bed.
My trailer has a front storage compartment which is just in front of the bedroom so it was a short run out where the old battery was. I was lucky to have a 2,500 watt Prosine inverter/charger collecting dust so I just finished putting that in. If the batteries are half dead the Prosine will start charging at 90ah (rate goes down with time as the batteries fill up).
One thing to consider is upgrading your charger if you plan to use it and that's why I installed the Prosine. I have a generator on board and the 60ah charger would only charge the batteries at 20ah. After a night of running the tank heaters, etc. I'd be running the generator for 4 to 6 hours just to charge back up.
I tried an 80ah charger I had and it wouldn't charge more then around 20ah as well. I believe the trailer charger and other test charger simply don't output the voltage the NPD12 battery needs to start drawing more current. They'd charge around 13.2v according to my battery monitor where the Prosine will charge at 14.2 which is where the NPD spec sheet states the charge voltage should be.
I also have a single solar panel which will take care of charging in the summer months. The generator is used when we're camping in the cold winter so very hot to run the AC for a while.