Renogy 200aH AGM Battery - Thoughts?

dgsheltodgshelto Posts: 5Registered Users ✭✭
I'm currently in the market for a battery to complete my solar setup and I came across this: 
https://www.walmart.com/ip/Renogy-Deep-Cycle-AGM-Battery-12-Volt-200Ah/900928791

Has anyone had any real experience with this battery? I'm not looking for a battery debate, just feedback from users.

Comments

  • EstragonEstragon Posts: 2,921Registered Users ✭✭✭✭✭
    It may also be worth (if you haven't already done so), posting to (eg) fishing forums as well. It seems to me this type of battery would be well suited to something like a trolling motor application. In a solar application, it may be more difficult to judge the battery vs problems with the application/installation (eg. lots of parallel connections).
    Off-grid.  
    Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
    Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
  • BB.BB. Posts: 28,040Super Moderators, Administrators admin
    Do you want to tell us is a bit more about your needs and system?

    Like to match the battery bank to your loads, and match the solar array to the back.

    Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
  • Raj174Raj174 Posts: 648Solar Expert ✭✭✭✭
    I don't have any experience this battery, but Renony sells solar power equipment. The literature on the batteries indicates that they are designed for solar applications. Note the 200AH rating is for 10 hours. I believe the 20 hour rate would be closer to 220AH. At 129 pounds each, it very likely is. If purchasing, make sure mfg. date is recent. Link to this battery's data sheet is attached.

    Compare to this battery:
    https://www.apexbattery.com/12v-200ah-4d-deep-cycle-agm-solar-battery-ub
    3600W PV, MNE175DR-TR epanel modified, MN Classic 150, Outback Radian GS4048A, Mate3, 54.4V 207AH LiFePO4 no BMS, 4500W genset.
  • dgsheltodgshelto Posts: 5Registered Users ✭✭
    My calculated needs (conservatively) are about 50ah per day. I have 200W of solar mounted and a 140A battery isolator kit for additional charging while on the move. I'll be spending time in all sorts of climate over the next year. 

    Affordability is what prompted me to consider this battery as I'm sure there are much better alternatives out there, but it is hard to beat this price per aH. 

    Should I be concerned with the 10 hour rate as opposed to 20? 
  • EstragonEstragon Posts: 2,921Registered Users ✭✭✭✭✭
    I assume this is a mobile application? Do you have an alternative way to charge (eg generator or engine alternator)?
    Off-grid.  
    Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
    Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
  • dgsheltodgshelto Posts: 5Registered Users ✭✭
    Yes, I'll be taking a year-long trip with my SO in our conversion van. 

    House battery charging methods: 200W solar + alternator isolator kit
  • EstragonEstragon Posts: 2,921Registered Users ✭✭✭✭✭
    A pair of 6v golf cart batteries might be a bit cheaper in $/ah, but in a mobile application agm is nice with no spillage risk or routine venting of gas. 200w solar could be marginal for a 200+ ah battery, but if you're willing to charge with alternator, maybe workable. You may want to check the alternator specs though, as standard one may not be designed for sustained operation at full output. The agm battery may be able to take a charge at 40+amps.

    The 10hr rate isn't a deal-breaker IMHO, but may be indicative of construction that leans a bit towards a hybrid (thinner plates with more surface area).
    Off-grid.  
    Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
    Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
  • dgsheltodgshelto Posts: 5Registered Users ✭✭
    I want to make sure I'm understanding this correctly. The Renogy battery has 10, 3, and 1 hour rates. I can't imagine I would ever pull 20amps per hour with my setup. Could I assume it would take a full 20 hours to deplete the battery at 10aH? 
  • EstragonEstragon Posts: 2,921Registered Users ✭✭✭✭✭
    Yes, more or less 20hrs at a 10a load from full to dead.

    In actual use, a given wattage load will pull lower amps at higher voltage initially, the higher amps at lower voltage as the battery discharges, but close enough. A LA battery drained to dead will likely not fully recover. Doing it regularly will significantly shorten its life. I would avoid ever drawing that battery much under 12.1v (roughly 50%SOC), and recharge asap from that level.
    Off-grid.  
    Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
    Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
  • dgsheltodgshelto Posts: 5Registered Users ✭✭
    If that is the case then I would assume the Renogy battery would work just fine for my application. I appreciate the feedback.
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