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a1 12v battery/location

 
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zeke57
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Joined: Dec 28, 2017
Posts: 133
Location: Salamanca,NY

PostPosted: Fri May 03, 2019 11:22 am    Post subject: a1 12v battery/location Reply with quote

After measuring the battery box it appears a standard automotive battery is not going to fit so what are the options for the battery location? I see in one of Wes's photos where it is mounted on the firewall in the place formerly occupied by the air cleaner but I would like to be able to use the stock air cleaner so is there anywhere else it could be safely relocated like maybe where the voltage regulator would sit! Is there a 12v battery made that would fit in the battery box?
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wesk
Site Administrator
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Joined: Apr 04, 2005
Posts: 14203
Location: Wisconsin

PostPosted: Fri May 03, 2019 1:04 pm    Post subject: Reply with quote

In my photo album lies the answer to your question:

My main album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php&page=1

Then M Series Electrics: http://www.willysmjeeps.com/v2/modules.php?set_albumName=album173&op=modload&name=gallery&file=index&include=view_album.php

This photo ID's the dimensions of the 2HN military battery:


Did you notice the photo tells you the civvy 22NF will fit?

Compare that info to a standard BCI Battery dimension listing:

Quote:

BCI Group Numbers, Dimensional Specifications, Polarity & Terminals
Group L" W" H" Lmm Wmm Hmm Figure Polarity Terminals
22F 9.50 6.90 8.30 240 175 211 11 R/H-POS TOP - SAE AUTO
22NF 9.40 5.50 8.90 240 140 227 11 R/H-POS TOP - SAE AUTO
24 10.30 6.80 8.90 260 175 225 10 L/H-POS TOP - SAE AUTO
24F 10.30 6.80 8.90 260 175 225 11 R/H-POS TOP - SAE AUTO
25 9.10 6.90 8.90 230 175 225 10 L/H-POS TOP - SAE AUTO
26 8.20 6.90 7.80 208 175 197 10 L/H-POS TOP - SAE AUTO
26R 8.20 6.90 7.80 208 175 197 11 R/H-POS TOP - SAE AUTO
26 - 70 8.20 6.90 7.80 208 175 197 10 & 17 C-LINE TOP & SIDE
27 12.10 6.80 8.90 306 175 225 10 L/H-POS TOP - SAE AUTO
27F 12.10 6.80 8.90 306 175 225 11 R/H-POS TOP - SAE AUTO
29NF 13.00 5.50 8.90 330 140 227 11 R/H-POS TOP - SAE AUTO
33 13.30 6.80 9.40 338 173 238 11 R/H-POS TOP - SAE AUTO
34 10.30 6.80 7.90 260 175 200 10 L/H-POS TOP - SAE AUTO
34R 10.30 6.80 7.90 260 173 200 11 R/H-POS TOP - SAE AUTO
34 - 78 10.30 6.80 7.90 260 175 200 10 & 17 C-LINE TOP & SIDE
35 9.10 6.90 8.90 230 175 225 11 R/H-POS TOP - SAE AUTO
36R 10.40 7.30 8.10 263 183 206 19 R/H-POS TOP - SAE AUTO
40R 10.90 6.90 6.90 278 175 175 15 R/H-POS TOP - SAE AUTO
41 11.60 6.90 6.90 293 175 175 15 R/H-POS TOP - SAE AUTO
42 9.60 6.80 6.80 243 173 173 15 R/H-POS TOP - SAE AUTO
43 13.10 6.90 8.00 334 175 205 15 R/H-POS TOP - SAE AUTO
45 9.50 5.50 9.00 240 140 227 10 L/H-POS TOP - SAE AUTO
46 10.80 6.80 9.00 273 173 229 9 L/H-POS TOP - SAE AUTO
47 9.70 6.90 7.50 246 175 190 15 R/H-POS TOP - SAE AUTO
48 12.10 6.90 7.60 278 175 190 24 R/H-POS TOP - SAE AUTO
48/91 12.10 6.90 7.60 306 175 192 15 R/H-POS TOP - SAE AUTO
49 13.90 6.90 7.60 353 175 190 24 R/H-POS TOP - SAE AUTO
49/93 15.00 6.90 7.60 381 175 192 15 R/H-POS TOP - SAE AUTO
50 13.50 5.00 10.00 343 127 254 10 L/H-POS TOP - SAE AUTO
51 9.40 5.10 8.80 238 129 223 10 L/H-POS TOP - SAE AUTO
51R 9.40 5.10 8.80 238 129 223 11 R/H-POS TOP - SAE AUTO
52 7.30 5.80 8.30 186 147 210 10 L/H-POS TOP - SAE AUTO
53 13.00 4.70 8.30 330 119 210 14 L/H-POS TOP - SAE AUTO
54 7.30 6.10 8.40 186 154 212 19 R/H-POS TOP - SAE AUTO
55 8.60 6.10 8.40 218 154 212 19 R/H-POS TOP - SAE AUTO
56 10.00 6.10 8.40 254 154 212 19 R/H-POS TOP - SAE AUTO
57 8.10 7.20 6.90 205 183 177 22 R/H-POS TOP - SAE AUTO
58 10.10 7.20 6.90 255 183 175 26 L/H-POS TOP - SAE AUTO
58R 10.10 7.20 6.90 255 183 175 19 R/H-POS TOP - SAE AUTO
59 10.10 7.60 7.80 255 193 196 21 L/H-POS TOP - SAE AUTO
60 13.10 6.30 8.90 332 160 225 12 R/H-POS TOP - SAE AUTO
61 7.60 6.40 8.90 192 162 225 20 R/H-POS TOP - SAE AUTO
62 8.90 6.40 8.90 225 162 225 20 R/H-POS TOP - SAE AUTO
63 10.20 6.40 8.90 258 162 225 20 R/H-POS TOP - SAE AUTO
64 11.70 6.40 8.90 296 162 225 20 R/H-POS TOP - SAE AUTO
65 12.10 7.50 7.60 306 190 192 21 L/H-POS TOP - SAE AUTO
66 12.10 7.60 7.60 306 192 194 13 L/H-POS TOP - SAE AUTO
70 8.20 7.10 7.30 208 179 196 17 L/H-POS SIDE
71 8.20 7.10 8.50 208 179 216 17 L/H-POS SIDE
72 9.10 7.10 8.30 230 179 210 17 L/H-POS SIDE
73 9.10 7.10 8.50 230 179 216 17 L/H-POS SIDE
74 10.30 7.30 8.80 260 184 222 17 L/H-POS SIDE
75 9.10 7.10 7.30 230 179 186 17 L/H-POS SIDE
76 13.10 7.10 8.50 334 179 216 17 L/H-POS SIDE
78 10.30 7.10 7.30 260 179 186 17 L/H-POS SIDE
79 12.10 7.10 7.40 307 179 188 35 L/H-POS SIDE
85 9.10 6.80 8.00 230 173 203 11 R/H-POS TOP - SAE AUTO
86 9.10 6.80 8.00 230 173 203 10 L/H-POS TOP - SAE AUTO
90 9.50 6.90 6.90 242 175 175 24 R/H-POS TOP - SAE AUTO
91 11.00 6.90 6.90 278 175 175 24 R/H-POS TOP - SAE AUTO
92 12.50 6.90 6.90 315 175 175 24 R/H-POS TOP - SAE AUTO
93 13.90 6.90 6.90 93 353 175 24 R/H-POS TOP - SAE AUTO
94R 12.40 6.90 7.50 315 175 190 24 R/H-POS TOP - SAE AUTO
95R 15.60 6.90 7.50 394 175 190 24 R/H-POS TOP - SAE AUTO
96R 9.60 6.20 6.90 242 173 175 15 R/H-POS TOP - SAE AUTO
97R 9.90 6.90 7.50 252 175 190 15 R/H-POS TOP - SAE AUTO
98R 11.20 6.90 7.50 283 175 190 15 R/H-POS TOP - SAE AUTO
99 8.20 6.90 6.90 207 175 175 34 L/H-POS TOP - SAE AUTO
100 10.30 7.00 7.30 260 179 188 35 L/H-POS SIDE
101 10.30 7.00 6.70 260 179 170 17 L/H-POS SIDE


You may also wish to consider cold cranking amps when choising a civvy battery that fits the M38A1 battery box. You can pay dearly for a higher rating single battery or pay less for a lower rating and buy two which will leave your battery box looking stock!
_________________
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php


Last edited by wesk on Fri May 03, 2019 8:19 pm; edited 1 time in total
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OKCM38CDN
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Joined: Feb 17, 2012
Posts: 344
Location: Del City, OK

PostPosted: Fri May 03, 2019 1:26 pm    Post subject: Reply with quote

I use 51R batteries, a little bit smaller than the 2HN, but available readily at Sam's Club here in Del City... I got two for the M-38 CDN and work great... Have to be a little creative with hold downs but... I am not displaying for judging, just daily driver at this point...

Hope this helps...
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Hal, KB1ZQ
TSGT, USAF (Ret)
1952 M-38 CDN CAR 52-31313
1952 M-100 Strick #104
1951 Willys Wagon (For Sale)
1954 Willys M38A1 (Restoration Started)
Tornado Alley
Del City, OK
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mdainsd
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Joined: Oct 20, 2017
Posts: 265

PostPosted: Fri May 03, 2019 2:28 pm    Post subject: Reply with quote

51R is what I use too. Two will fit in a M38A1 cowl battery box and look almost stock as already suggested. I get mine at Interstate Battery warehouse and last time I think I paid 38 bucks each. I use them in my M37 in 24v mode, they work great with higher CCA than the original military batteries.
_________________
1952 Dodge M37, 1942 MB script, 1948 FrankenJeep CJ2A/M38, 1951 M38, !942 WC-57 Command Car Undergoing factory original restoration, 1944 WC-51 Weapons , (2) M1941 Sperry 60" Anti-Aircraft Searchlight, John Deere M-gators
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RICKG
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Joined: Aug 31, 2010
Posts: 1587
Location: SO IDAHO

PostPosted: Fri May 03, 2019 3:25 pm    Post subject: Reply with quote

Zeke converted his M38a1 to 12V. Like Wes says you could fill the battery box with a pair of 51 series batts wired parallel.. how sweet would that be..

Ahem.. Zeke update your signature with your vehicle type before Wes has you drop and give him twenty the hard way.. Razz
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keep 'em rollin'
RICKG MC 51986 DOD 01-52
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zeke57
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Joined: Dec 28, 2017
Posts: 133
Location: Salamanca,NY

PostPosted: Fri May 03, 2019 6:48 pm    Post subject: Reply with quote

So being that I am converting to 12v (1) 51r battery is what I need? The ones I have seen online are between 450-500 cca is that sufficient?
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wesk
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Posts: 14203
Location: Wisconsin

PostPosted: Fri May 03, 2019 8:16 pm    Post subject: Reply with quote

My Bad, CCA and AH are actually unrelated. Try to stick with the Amp Hour (AH) rating for comparisons. The military 2HN was a 45 AH battery. I don't see any military references offering a CCA rating.



Here's an explanation why the 2 are not alike.

http://willysmjeeps.com/v2/modules/gallery/albums/album173/Mil_Bat_Specs_001.sized.jpg
_________________
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php


Last edited by wesk on Fri May 03, 2019 8:21 pm; edited 2 times in total
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mdainsd
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Joined: Oct 20, 2017
Posts: 265

PostPosted: Fri May 03, 2019 8:18 pm    Post subject: Reply with quote

And new batteries don't go by AH.
_________________
1952 Dodge M37, 1942 MB script, 1948 FrankenJeep CJ2A/M38, 1951 M38, !942 WC-57 Command Car Undergoing factory original restoration, 1944 WC-51 Weapons , (2) M1941 Sperry 60" Anti-Aircraft Searchlight, John Deere M-gators
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cabinfever
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Joined: May 14, 2013
Posts: 187
Location: Between Crosslake and Emily, Minnesota

PostPosted: Sun May 05, 2019 8:38 am    Post subject: Reply with quote

I use twin Interstate MT-51R in my M38A1. They fit well in the battery box.


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Steve Stark - 1955 M38A1 MD #85388

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keats
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Joined: Apr 14, 2005
Posts: 218
Location: Middletown Ct

PostPosted: Sun May 05, 2019 10:59 am    Post subject: Reply with quote

I have been using diehard 51R batteries for years and they work well with the original battery hold downs. just check on any shifting after hitting big bumps, but overall work very well



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Gary Keating
1949 C3A, 1952 M38,
1954 M170, 1957 Cj3B
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zeke57
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Joined: Dec 28, 2017
Posts: 133
Location: Salamanca,NY

PostPosted: Sun May 05, 2019 4:21 pm    Post subject: Reply with quote

Thanks everyone for the ideas. Being that I am converting to 12v I think I will try one of the 51r batteries and see how it cranks over.
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mdainsd
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Joined: Oct 20, 2017
Posts: 265

PostPosted: Thu May 09, 2019 1:35 pm    Post subject: Reply with quote

It will be fine. I use one to move around Dodge WCs. Cranks well and sometime its takes a bit to get fuel up.
_________________
1952 Dodge M37, 1942 MB script, 1948 FrankenJeep CJ2A/M38, 1951 M38, !942 WC-57 Command Car Undergoing factory original restoration, 1944 WC-51 Weapons , (2) M1941 Sperry 60" Anti-Aircraft Searchlight, John Deere M-gators
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