Slee Group 31M drop-in Battery Replacement (2 Viewers)

[JJ_SC]

I just installed an Odyssey battery and a solar panel to my RTT. Glad to hear it's working for you @guardcompany! What tender did you use from the solar?

 

[guardcompany]

I just installed an Odyssey battery and a solar panel to my RTT. Glad to hear it's working for you @guardcompany! What tender did you use from the solar?

I went with the Victron MPPT. The bluetooth is pretty rad. I've never had a charge controller that you can manage with an app before. You can track it all from your phone and manually adjust your charging profile per Odyssey's requirements.

 

[JJ_SC]

Cool - I'll check it out. Thanks for the info!

 

[lesgarten]

Way back when I purchased a Slee type 31M battery tray kit and a Sears Die Hard Platinum AGM type 31M battery to go with it. As with many folks, the Sears PDH type 31M battery died after about 2 years, and my mechanic "did me a favor" by replacing it with an stock Interstate 27F. I really can't complain, as that 27F has lasted me six years, but I'd like to replace it before taking any long road trips over the summer. I know the LC comes with a type 27F battery, but I figured since I got the Slee tray for a type 31 battery let me see what I could find. I wanted to avoid AGM technology after the bad experience with the Sears 31M, and I would prefer something which I could just drop in without extending any wires. After a bit of research on the Interstate webpage I found this:

I got my Slee tray and Diehard at the same time most likely and it is still strong. I like AGM better than Lead acid for slower rate of discharge. I wouldn't toss AGM, just sayin'

 

[ga12r1]

My Northstar probably feels like it’s at the spa sipping a drink and getting a pedicure

 

[Kabanstva]

My Northstar probably feels like it’s at the spa sipping a drink and getting a pedicure

View attachment 2237841

So all you have is that HKB booster fuse installed and you’re running dual AGMs? Do you put it on a tender when the truck sits or no need?

 

[ga12r1]

So all you have is that HKB booster fuse installed and you’re running dual AGMs? Do you put it on a tender when the truck sits or no need?

No, just a single AGM. A 27f Northstar. I have a noco with an AGM mode I put on it when I think about it, which isn’t very often. But it sat for nearly 2 months this winter without anything and It crunk right up.
Obviously the fridge wasn’t running

 

[Kabanstva]

For those that got a Slee dual battery/compressor tray, which NorthStar AGM fits in that little space?

 

[up5799]

Wish I knew about the HBK booster when my 31M Sears DH battery died. Would a HBK booster benefit those using a traditional lead acid battery?

 

[ga12r1]

Wish I knew about the HBK booster when my 31M Sears DH battery died. Would a HBK booster benefit those using a traditional lead acid battery?

I think it would be too much too much. Overcharging.

 

[NolaNomad]

This is exactly what I'm doing with my battery. Getting the Northstar, 180amp alternator, and volt booster.

Hey bud, which Northstar are you getting?

 

[bluesquirrel]

Hey bud, which Northstar are you getting?

It's either going to be a 27 or 31. The 31's are up to 9.7 inches tall.

Transportation

www.northstarbattery.com

 

[dogdaysindurham]

I have the voltage booster but still periodically use my charger for my dual group 65 AGMs.

 

[suprarx7nut]

I have that X2.

Any chance you have the Slee group 31 tray? I just installed this one and it appears to be too tall by a significant margin - like a full inch. I'm perplexed because the specs have it shorter than the Interstate 31P-AGM7 that Slee recommends. I might need low profile terminal clamps, but even then it seems too close for comfort.

Any tips are greatly appreciated!

 

[Ryan Carroll]

Any chance you have the Slee group 31 tray? I just installed this one and it appears to be too tall by a significant margin - like a full inch. I'm perplexed because the specs have it shorter than the Interstate 31P-AGM7 that Slee recommends. I might need low profile terminal clamps, but even then it seems too close for comfort.

Any tips are greatly appreciated!

Did you ever get an answer to this?

 

[SmoothLC]

Bringing back an old thread. I've got the Slee main battery trey for '98 to '07 LCs and LX470s but am having a hard time finding a battery that fits the trey. Most FLAs have the caps on top and don't fit with the hold down bracket.

Although I've run AGMs since I got the rig, right now I don't have a preference for FLAs/AGMs as much as I'd like to find a good fit. I'll make either work.

If you've got any suggestions/recommendations on what you use, that would be a big help. Thanks!

Note: It seems X2 Power batteries around here are all out of stock and have to be ordered from the distributor. Ditto with Odysseys (which is always the case.) But if they're the only ones that will fit, so be it. Also, why do Slee's recommendations for the two Interstate batteries have the battery poles on the wrong side?

 

[100 TD]

No idea what the Slee tray fits, I've run 31's for 20 years in my 100 IFS aussie spec turbo diesel, I previously ran Optima D31's both sides for ~7 years, CAT 175-4370 (825CCA 170 min RC) for ~12 years , replace every 4, they are flat top, threaded terminal post, but you would have to check Slee bracket/height etc to see if they fit. 175-4370 is a start/deep cycle, 175-4360 deep cycle/start (710CCA 185 min RC), 175-4390(1000CCA 180 min RC), start only. I'm sure there are other options, just a FYI. These are all flooded cell, but maintenance free, accessible/recessed caps on cells.

 

[SmoothLC]

I ended up getting an EverSmart Platinum AGM in a 24F. While not a "perfect" fit, it'll work for now and we'll see how it goes. Size 24F. 4 year warranty.

Too bad X2 Power and Odyssey are weeks away in terms of availability.

 

[dogdaysindurham]

Not sure if these other 31M AGM batteries will fit the Slee Tray.

BatteriesPlus there is a Duracell 31M ~$275 (30 month warranty) Duracell Ultra BCI Group 31M 12V 110AH 800CCA AGM Deep Cycle Marine & RV Battery - SLI31DTMAGMDC - https://www.batteriesplus.com/productdetails/sli31dtmagmdc

Sams Club there is a different model Duracell 31M ~$214 (only a 2 year warranty) Duracell AGM Deep Cycle Marine and RV Battery , Group Size 31 - Sam's Club - https://www.samsclub.com/p/duracell-agm-deep-cycle-marine-and-rv-battery-group-size-31dtmagm/prod3590232?xid=plp_product_13.

There is also the West Marine 31M $335 (only 18 month warranty) Sites-WestMarine-Site - https://www.westmarine.com/west-marine-group-31-dual-purpose-marine-agm-battery-105-amp-hours-800-cold-cranking-amps-1000-marine-cranking-amps-200-reserve-minutes-15020258.html

I have not been able to find the Deka (East Penn) 31M 8A31DTM in store anywhere ~$377 (12 month warranty) Deka Intimidator 8A31DTM Group Size 31 AGM Marine Battery - https://www.batterymart.com/p-8a31-dt-12v-sla-battery.html.

I run 2 Group 65 AGMs, both using the Odyssey tray, which required some modding to mount.