Charlesgm Posted July 6, 2019 Share Posted July 6, 2019 My 1990 Odyssey came with one Power Sonic 28 amp hr batt. The compartment is small, but could take another batt I think. How many amp hr battery is usually installed? Quote Link to comment Share on other sites More sharing options...
Odyssey 4x4 Posted July 6, 2019 Share Posted July 6, 2019 1 hour ago, Charlesgm said: My 1990 Odyssey came with one Power Sonic 28 amp hr batt. The compartment is small, but could take another batt I think. How many amp hr battery is usually installed? Completely dependent on your personal power needs. Quote Link to comment Share on other sites More sharing options...
linda s Posted July 6, 2019 Share Posted July 6, 2019 Your Odyssey probably came with a group 24 or 26 battery. About 80 to 100 amp hours. If you add another battery to the one you have they are supposed to be similar in size and amp hours to charge properly. Linda S Quote Link to comment Share on other sites More sharing options...
Maineah Posted July 6, 2019 Share Posted July 6, 2019 Parallel batteries are the total of both so two 80 amps give you a 160 amp hours yes they should be rated the same. Needs and wants are part of the scenario. Quote Link to comment Share on other sites More sharing options...
Petrolia Posted November 11, 2019 Share Posted November 11, 2019 I also have a 1989/1990 Odyssey and the battery compartment is only 10.75" deep, so I'm having a hard time finding a small enough 100 Ah battery (one on Amazon but the review implies that it might only be 85 Ah). I currently have two 35 Ah batteries that fit in the compartment, but they are getting old. I may settle for an 80 Ah battery, since it's kinda hard to wire the 2 batteries in that small space - depends on how much slack they gave you. Quote Link to comment Share on other sites More sharing options...
Charlesgm Posted November 14, 2019 Author Share Posted November 14, 2019 I have not answered until now as I was working on a solution, however it did not work out. I have not been able to find a suitable battery. Instead, I have decided to put in 1 100AH AGM battery by Weize (Amazon $165). It is also to large for the small compartment, so I intend to put it in the next compartment under the sofa in a battery box. Since it is AGM it does not gas, unless overcharged. My rig has an platform in the rear (which extends the length of the couch by about 2') I have placed the generator there as well as re ran the 30 amp power cord under the floor to the platform. This gives me the space for the battery. Frankly the under sofa area is not very well organized so I am in the process of rerouting the propane line, as well as the water line. This will give me more than enough space. So far the only draw back I can see, is that the builtin charger (5amps) will not work with the AGM Battery. That problem I am still working on. CHARLES Quote Link to comment Share on other sites More sharing options...
Maineah Posted November 15, 2019 Share Posted November 15, 2019 (edited) You will need to replace the converter/charger no matter what kind of battery you use they won't cut the mustard. For the cost of the AGM plus shipping you can buy two group 24 deep cycle sealed batteries locally with about 160 amps combined without having to buy a special charger for the AGM. Edited November 15, 2019 by Maineah Quote Link to comment Share on other sites More sharing options...
Charlesgm Posted November 18, 2019 Author Share Posted November 18, 2019 I contacted the orginal converter/charger folks who recommended a PD4045K replacement. It automatically handles both wet and dry batteries. I have been unable to locate group 24 batteries however, could you help me on that? Thanks Quote Link to comment Share on other sites More sharing options...
Maineah Posted November 18, 2019 Share Posted November 18, 2019 10 minutes ago, Charlesgm said: I contacted the orginal converter/charger folks who recommended a PD4045K replacement. It automatically handles both wet and dry batteries. I have been unable to locate group 24 batteries however, could you help me on that? Thanks Any auto parts store even WalMart. Unless you have a small battery compartment you should be able to use any battery that would fit a group 24 is a very common battery group 27 is only a bit larger and has more amp hours even a group 31. "If it fits it ships"! The group number basically refers to the size of the battery figure out what would fit in your space then go online and download the battery size chart. If a battery is listed as an "F" it is the reference to the post configuration (the F means Ford) their post configuration was the opposite of the other batteries. Quote Link to comment Share on other sites More sharing options...
Charlesgm Posted November 18, 2019 Author Share Posted November 18, 2019 I did find 1 battery that would fit the rather small compartment, but it is only 75 amp hyn only 1 battery will fit in the space. I am sure that I am going to relocate the batteries to a different location. since the are going to be agm or gel, it should be no problem -I hope!. Charles Quote Link to comment Share on other sites More sharing options...
linda s Posted November 18, 2019 Share Posted November 18, 2019 Where have you been looking for batteries. Group 24 is very common. I use this one https://www.walmart.com/ip/EverStart-Maxx-Lead-Acid-Marine-RV-Battery-Group-24DC/139801236 Lasts usually around 5 years, has higher amp hours than a regular group 24 at 94ah and cycles 30% more. Costs a whole 100 bucks Linda S Quote Link to comment Share on other sites More sharing options...
WME Posted November 18, 2019 Share Posted November 18, 2019 Standard RV battery sizes LxWxH Group 24...11.13"-6.6"-9.25" 46 lbs Group 27...12"-6.63"-9.06" 50 lbs Group 31...12.9"-6.75"-9.27" 60lbs CG2 (6v) ...10.38"-7.13"-11.88" 62 lbs Charger info http://www.bestconverter.com/ Quote Link to comment Share on other sites More sharing options...
Charlesgm Posted November 18, 2019 Author Share Posted November 18, 2019 thanks for the info. I am going with AGM batteries and found some (sigmas tek) they are 75 amp hr each x 2 = 150 amp hour. Plus we'll be adding solar panels (harbor Freight 100 watt) with a go power inverter. Quote Link to comment Share on other sites More sharing options...
WME Posted November 19, 2019 Share Posted November 19, 2019 Check out Amazon and Ebay for solar panel KITS. A much better deal than HF. Quote Link to comment Share on other sites More sharing options...
Maineah Posted November 19, 2019 Share Posted November 19, 2019 11 hours ago, WME said: Check out Amazon and Ebay for solar panel KITS. A much better deal than HF. I agree with that and better quality. Quote Link to comment Share on other sites More sharing options...
WME Posted November 20, 2019 Share Posted November 20, 2019 Multiple battery charging RULE 1 Always charge in series!!! Charging in parallel results in unbalanced batteries. The first battery to reach full charge Voltage will shut down the charge cycle and the other batteries will not reach full charge. If your concerned about reaching max charge you can do several easy things. If your using a diode isolator ditch it, they have a natural .7v loss across the diode bank. Get a high quality relay isolator. Normal is alternator and truck battery on one post and the house battery on the other. If you change things around and hook the house battery and alternator together you can gain a little voltage at the house battery. The truck battery is fine without the same extra V. Quote Link to comment Share on other sites More sharing options...
Maineah Posted November 20, 2019 Share Posted November 20, 2019 9 hours ago, WME said: Multiple battery charging RULE 1 Always charge in series!!! Charging in parallel results in unbalanced batteries. The first battery to reach full charge Voltage will shut down the charge cycle and the other batteries will not reach full charge. If your concerned about reaching max charge you can do several easy things. If your using a diode isolator ditch it, they have a natural .7v loss across the diode bank. Get a high quality relay isolator. Normal is alternator and truck battery on one post and the house battery on the other. If you change things around and hook the house battery and alternator together you can gain a little voltage at the house battery. The truck battery is fine without the same extra V. Make sure they add up to the proper voltage first! With the two 12 volts in mine things would go south real fast! Quote Link to comment Share on other sites More sharing options...
WME Posted November 20, 2019 Share Posted November 20, 2019 2 hours ago, Maineah said: Make sure they add up to the proper voltage first! With the two 12 volts in mine things would go south real fast! Well ya of course, if you are running 12v batteries in parallel , once a month disconnect them and charge them separately. Again this is for those who need every erg of energy out of their batteries. Once a year is enough for most of us. Seperate charging will also let you verify that you have good batteries. Quote Link to comment Share on other sites More sharing options...
Maineah Posted November 22, 2019 Share Posted November 22, 2019 Batteries will even out but a weak one will affect the better one they will meet at the average point so there is a good chance they both will be below 12.7 if one is on it's way out. Quote Link to comment Share on other sites More sharing options...
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