Teleman wrote:pianotuna wrote:Teleman wrote:pianotuna wrote:
Teleman,
Another reason to have a bypass circuit is for a \"poor mans\" boost switch. If the chassis batteries are dead, you would be able to get some amps into them from the \"house\" bank. Don't have it \"active\" when starting. The Li bms will NOT like it.
If the alternator did fail, then that bypass circuit could be used to keep the engine running a lot longer while getting to a service center. Of course the Redarc ought to be turned off to do this.
What kind of switch do you use? I take it using the house battery boost switch as is isn't recommended? I carry a jump start battery pack too.
Hi Teleman,
I use this type:
https://www.napaonline.com/en/p/NW_786125?impressionRank=3
I like it because I store it with the \"key\" hanging on a string. It would be nearly impossible to turn it on by accident. Maximum load up to 300 Amp @ 24 Volt DC.
OK thanks.
Teleman wrote:pianotuna wrote:Teleman wrote:pianotuna wrote:
Teleman,
Another reason to have a bypass circuit is for a \"poor mans\" boost switch. If the chassis batteries are dead, you would be able to get some amps into them from the \"house\" bank. Don't have it \"active\" when starting. The Li bms will NOT like it.
If the alternator did fail, then that bypass circuit could be used to keep the engine running a lot longer while getting to a service center. Of course the Redarc ought to be turned off to do this.
What kind of switch do you use? I take it using the house battery boost switch as is isn't recommended? I carry a jump start battery pack too.
Hi Teleman,
I use this type:
https://www.napaonline.com/en/p/NW_786125?impressionRank=3
I like it because I store it with the \"key\" hanging on a string. It would be nearly impossible to turn it on by accident. Maximum load up to 300 Amp @ 24 Volt DC.
OK thanks.
pianotuna wrote:Teleman wrote:pianotuna wrote:
Teleman,
Another reason to have a bypass circuit is for a \"poor mans\" boost switch. If the chassis batteries are dead, you would be able to get some amps into them from the \"house\" bank. Don't have it \"active\" when starting. The Li bms will NOT like it.
If the alternator did fail, then that bypass circuit could be used to keep the engine running a lot longer while getting to a service center. Of course the Redarc ought to be turned off to do this.
What kind of switch do you use? I take it using the house battery boost switch as is isn't recommended? I carry a jump start battery pack too.
Hi Teleman,
I use this type:
https://www.napaonline.com/en/p/NW_786125?impressionRank=3
I like it because I store it with the \"key\" hanging on a string. It would be nearly impossible to turn it on by accident. Maximum load up to 300 Amp @ 24 Volt DC.
pianotuna wrote:Teleman wrote:pianotuna wrote:
Teleman,
Another reason to have a bypass circuit is for a \"poor mans\" boost switch. If the chassis batteries are dead, you would be able to get some amps into them from the \"house\" bank. Don't have it \"active\" when starting. The Li bms will NOT like it.
If the alternator did fail, then that bypass circuit could be used to keep the engine running a lot longer while getting to a service center. Of course the Redarc ought to be turned off to do this.
What kind of switch do you use? I take it using the house battery boost switch as is isn't recommended? I carry a jump start battery pack too.
Hi Teleman,
I use this type:
https://www.napaonline.com/en/p/NW_786125?impressionRank=3
I like it because I store it with the \"key\" hanging on a string. It would be nearly impossible to turn it on by accident. Maximum load up to 300 Amp @ 24 Volt DC.
Teleman wrote:pianotuna wrote:
Teleman,
Another reason to have a bypass circuit is for a \"poor mans\" boost switch. If the chassis batteries are dead, you would be able to get some amps into them from the \"house\" bank. Don't have it \"active\" when starting. The Li bms will NOT like it.
If the alternator did fail, then that bypass circuit could be used to keep the engine running a lot longer while getting to a service center. Of course the Redarc ought to be turned off to do this.
What kind of switch do you use? I take it using the house battery boost switch as is isn't recommended? I carry a jump start battery pack too.
![](\"https://i.ebayimg.com/thumbs/images/g/aFQAAOSw1nVd2Frz/s-l225.webp\")
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Teleman,
Another reason to have a bypass circuit is for a \"poor mans\" boost switch. If the chassis batteries are dead, you would be able to get some amps into them from the \"house\" bank. Don't have it \"active\" when starting. The Li bms will NOT like it.
If the alternator did fail, then that bypass circuit could be used to keep the engine running a lot longer while getting to a service center. Of course the Redarc ought to be turned off to do this.
What kind of switch do you use? I take it using the house battery boost switch as is isn't recommended? I carry a jump start battery pack too.
","images":{"__typename":"AssociatedImageConnection","edges":[],"totalCount":0,"pageInfo":{"__typename":"PageInfo","hasNextPage":false,"endCursor":null,"hasPreviousPage":false,"startCursor":null}},"timeToRead":1,"currentRevision":{"__ref":"Revision:revision:3481796_1"},"latestVersion":null,"messagePolicies":{"__typename":"MessagePolicies","canModerateSpamMessage":{"__typename":"PolicyResult","failureReason":{"__typename":"FailureReason","message":"error.lithium.policies.feature.moderation_spam.action.moderate_entity.allowed.accessDenied","key":"error.lithium.policies.feature.moderation_spam.action.moderate_entity.allowed.accessDenied","args":[]}}}},"ModerationData:moderation_data:3481795":{"__typename":"ModerationData","id":"moderation_data:3481795","status":"APPROVED","rejectReason":null,"isReportedAbuse":false,"rejectUser":null,"rejectTime":null,"rejectActorType":null},"ForumReplyMessage:message:3481795":{"__typename":"ForumReplyMessage","author":{"__ref":"User:user:193771"},"id":"message:3481795","revisionNum":1,"uid":3481795,"depth":1,"hasGivenKudo":false,"subscribed":false,"board":{"__ref":"Forum:board:TechnicalIssues"},"parent":{"__ref":"ForumTopicMessage:message:3481740"},"conversation":{"__ref":"Conversation:conversation:3481740"},"subject":"Re: LiFePo battery upgrade question","moderationData":{"__ref":"ModerationData:moderation_data:3481795"},"body":"pianotuna wrote:Teleman wrote:otrfun wrote:pianotuna wrote:This could potentially be an important feature consideration. It'll be interesting to see if the 124a alternator has the headroom to handle the additional ~40a load for the long haul.
. . . Can it be limited to 20 amps if need be? . . .
I'll have to look into it. I was originally looking at a 25A unit but that would have been inadequate for 400 watts of solo panels, which I plan to install next spring.
That would not be a switch. It would be a feature on the dc to DC charger.
pianotuna wrote:Teleman wrote:otrfun wrote:pianotuna wrote:This could potentially be an important feature consideration. It'll be interesting to see if the 124a alternator has the headroom to handle the additional ~40a load for the long haul.
. . . Can it be limited to 20 amps if need be? . . .
I'll have to look into it. I was originally looking at a 25A unit but that would have been inadequate for 400 watts of solo panels, which I plan to install next spring.
That would not be a switch. It would be a feature on the dc to DC charger.
Teleman wrote:otrfun wrote:pianotuna wrote:This could potentially be an important feature consideration. It'll be interesting to see if the 124a alternator has the headroom to handle the additional ~40a load for the long haul.
. . . Can it be limited to 20 amps if need be? . . .
I'll have to look into it. I was originally looking at a 25A unit but that would have been inadequate for 400 watts of solo panels, which I plan to install next spring.
Teleman wrote:otrfun wrote:pianotuna wrote:This could potentially be an important feature consideration. It'll be interesting to see if the 124a alternator has the headroom to handle the additional ~40a load for the long haul.
. . . Can it be limited to 20 amps if need be? . . .
I'll have to look into it. I was originally looking at a 25A unit but that would have been inadequate for 400 watts of solo panels, which I plan to install next spring.
pianotuna wrote:
Teleman,
That is a good decision. Can it be limited to 20 amps if need be? It is a far superior make.
Another reason to have a bypass circuit is for a \"poor mans\" boost switch. If the chassis batteries are dead, you would be able to get some amps into them from the \"house\" bank. Don't have it \"active\" when starting. The Li bms will NOT like it.
If the alternator did fail, then that bypass circuit could be used to keep the engine running a lot longer while getting to a service center. Of course the Redarc ought to be turned off to do this.
pianotuna wrote:
Teleman,
That is a good decision. Can it be limited to 20 amps if need be? It is a far superior make.
Another reason to have a bypass circuit is for a \"poor mans\" boost switch. If the chassis batteries are dead, you would be able to get some amps into them from the \"house\" bank. Don't have it \"active\" when starting. The Li bms will NOT like it.
If the alternator did fail, then that bypass circuit could be used to keep the engine running a lot longer while getting to a service center. Of course the Redarc ought to be turned off to do this.
otrfun wrote:pianotuna wrote:This could potentially be an important feature consideration. It'll be interesting to see if the 124a alternator has the headroom to handle the additional ~40a load for the long haul.
. . . Can it be limited to 20 amps if need be? . . .
otrfun wrote:pianotuna wrote:This could potentially be an important feature consideration. It'll be interesting to see if the 124a alternator has the headroom to handle the additional ~40a load for the long haul.
. . . Can it be limited to 20 amps if need be? . . .
pianotuna wrote:This could potentially be an important feature consideration. It'll be interesting to see if the 124a alternator has the headroom to handle the additional ~40a load for the long haul.","body@stripHtml({\"removeProcessingText\":false,\"removeSpoilerMarkup\":false,\"removeTocMarkup\":false,\"truncateLength\":200})@stringLength":"203","kudosSumWeight":0,"repliesCount":0,"postTime":"2021-11-14T05:19:59.000-08:00","lastPublishTime":"2021-11-14T05:19:59.000-08:00","metrics":{"__typename":"MessageMetrics","views":739},"visibilityScope":"PUBLIC","placeholder":false,"originalMessageForPlaceholder":null,"isEscalated":null,"solution":false,"entityType":"FORUM_REPLY","eventPath":"category:RVTalk/community:feyqc97479board:TechnicalIssues/message:3481740/message:3481791","replies":{"__typename":"MessageConnection","pageInfo":{"__typename":"PageInfo","hasNextPage":false,"endCursor":null,"hasPreviousPage":false,"startCursor":null},"edges":[]},"attachments":{"__typename":"AttachmentConnection","edges":[],"pageInfo":{"__typename":"PageInfo","hasNextPage":false,"endCursor":null,"hasPreviousPage":false,"startCursor":null}},"customFields":[],"readOnly":false,"editFrozen":false,"body@stringLength":"285","rawBody":"
. . . Can it be limited to 20 amps if need be? . . .
pianotuna wrote:This could potentially be an important feature consideration. It'll be interesting to see if the 124a alternator has the headroom to handle the additional ~40a load for the long haul.","images":{"__typename":"AssociatedImageConnection","edges":[],"totalCount":0,"pageInfo":{"__typename":"PageInfo","hasNextPage":false,"endCursor":null,"hasPreviousPage":false,"startCursor":null}},"timeToRead":1,"currentRevision":{"__ref":"Revision:revision:3481791_1"},"latestVersion":null,"messagePolicies":{"__typename":"MessagePolicies","canModerateSpamMessage":{"__typename":"PolicyResult","failureReason":{"__typename":"FailureReason","message":"error.lithium.policies.feature.moderation_spam.action.moderate_entity.allowed.accessDenied","key":"error.lithium.policies.feature.moderation_spam.action.moderate_entity.allowed.accessDenied","args":[]}}}},"ModerationData:moderation_data:3481790":{"__typename":"ModerationData","id":"moderation_data:3481790","status":"APPROVED","rejectReason":null,"isReportedAbuse":false,"rejectUser":null,"rejectTime":null,"rejectActorType":null},"ForumReplyMessage:message:3481790":{"__typename":"ForumReplyMessage","author":{"__ref":"User:user:36953"},"id":"message:3481790","revisionNum":1,"uid":3481790,"depth":1,"hasGivenKudo":false,"subscribed":false,"board":{"__ref":"Forum:board:TechnicalIssues"},"parent":{"__ref":"ForumTopicMessage:message:3481740"},"conversation":{"__ref":"Conversation:conversation:3481740"},"subject":"Re: LiFePo battery upgrade question","moderationData":{"__ref":"ModerationData:moderation_data:3481790"},"body":"Teleman,
. . . Can it be limited to 20 amps if need be? . . .
