Forum Discussion

Butch50's avatar
Butch50
Explorer
Oct 20, 2016

Battery box for 12VDC GRP 31 AGM

Does anyone know of a source for a durable battery box that would hold 2 GRP 31 AGM batteries that you could recommend? This well be located in one of my outside storage compartments. It would be added to 2 other GRP 31 AGM string in another location less than 1' away.

I have been searching and have not found what I'm looking for yet.
  • http://www.batterymart.com/p-120215-quickcable-dual-27-31-battery-box.html

    http://www.quickcable.com/products.php?pageId=847
  • For some reason the site is not letting me do a quote.

    DaveInPickerington

    Thanks, It looks like they have one that would work
  • You'd have to double check but IIRC, the boxes designed for group 27's are also designed to take 31's.
  • Ivylog wrote:
    Why do you need a box? Put them on some plywood and strap them down.


    I want them enclosed as the storage compartment that is big and there well be other items in the same compartment. Don't want something falling against them and causing a short. Would not be a pretty sight to have 4 GRP 31 batteries discharging at the same time. Also would want something to hit the case of a battery and causing acid spill in the compartment.
  • RoyB wrote:
    Check out the line of diamond plate metal battery boxes FORKLIFT has on their site...

    I have made up a couple of metal battery boxes for the GC2 size 6V Batteries using the 48-inch truck bed side mount metal boxes but this would not work good for GP31's...

    Just remember if they are wet batteries you have to provide for venting battery fumes when charging and also a drain to earth ground in case you boil out fluids by over charging...

    When mixing with other batteries you have to use equal lengths cabling so each battery demands the same charging currents so they all will charge up at the same rate and time... Have never mixed AGM and wet batteries together at same time for charging... You may have to charge each bank separately to keep a badly charged up bank from pulling down a good charged up bank...

    I like to use the BLUE SEA Marine DC electrical products for projects like this...

    Roy Ken


    All of the batteries would be 31 AGMs. No mixing here and they would all be new at the same time. The AGM would not require any venting this is part of the reason for using them.
  • Without research, I'm not sure of the Group 31 dimensions. However, I bought a box made by Century Plastics for my dual 6V setup. The box held up well for several years.

    http://www.allbatterysalesandservice.com/browse.cfm?step=8&vendor_query=CENTURY%2520PLASTICS%252C%2520LTD
  • Ivylog's avatar
    Ivylog
    Explorer III
    Why do you need a box? Put them on some plywood and strap them down.
  • RoyB's avatar
    RoyB
    Explorer II
    Check out the line of diamond plate metal battery boxes FORKLIFT has on their site...

    I have made up a couple of metal battery boxes for the GC2 size 6V Batteries using the 48-inch truck bed side mount metal boxes but this would not work good for GP31's...

    Just remember if they are wet batteries you have to provide for venting battery fumes when charging and also a drain to earth ground in case you boil out fluids by over charging...

    When mixing with other batteries you have to use equal lengths cabling so each battery demands the same charging currents so they all will charge up at the same rate and time... Have never mixed AGM and wet batteries together at same time for charging... You may have to charge each bank separately to keep a badly charged up bank from pulling down a good charged up bank...

    I like to use the BLUE SEA Marine DC electrical products for projects like this...

    Roy Ken