Victron Battery Protect Install

[TeCKis300]

I've added a few accessories that allows power draw when the vehicle is off. I don't plan to ever install a dual bank battery system so I'll always be drawing from the single starting battery bank. Wanted to ensure it cuts off loads leaving enough starting power. Even with a dual bank, it's probably a good idea to install a low voltage battery relay to protect from full depletion which will damage a battery.

Enter the Victron Battery Protect 65 (BP65 - 65amp) solid state voltage sensing relay. They have larger current handling models but this is all I'll need. It's extremely low parasitic draw and programmable to cut-off at different voltages for different applications and battery types. With a flooded lead acid battery, I have mine setup to disconnect conservatively at 12V (setting b8) Any accessory I install to the battery will now be installed to the load post here.

I didn't like the big positive posts exposed to possibly cause an accidental short. I took some insulating jacket off my 4 gauge wire. Fits perfectly over the posts!. The other small black wire here is ground, for the Victron to operate. Also a shorting jumper that if removed, completely turns off the loads, sort of like a switch. Actually, a physical switch can be installed here to have it operate that way. Which is good if putting the car in storage for example, removing all parasitic loads. Overall, great quality unit for a reasonable price.

Here's where some of the vehicle off loads will be coming from. Primarily for car camping where I may leave a cell booster on, warming blanket, USB charging, etc.

 

[kng]

Thanks teckis300
nice pics!!!!!!!

 

[CJ3Flyer]

Is the Stanger part of the Victron or separate? It looks like a noise suppressor.

I like the concept and I like that if installed like you did bypassing is super-easy, just screw both cables onto the same post. I’m not likely to do a dual battery setup and that looks like a decent alternative.

 

[Shots]

Hey TeCKis300, Ive set up the same in my Cruiser but being under the bonnet, the over-temp cutout occurs as soon as it gets to 40C. Have you had the same issue?

 

[TeCKis300]

Hi Shots. I haven't had an issue.

I see where it's rated to 40C for 100% load and 50C for 60% load. I suspect these are just the component ratings, rather than an active overtemp cut-off? Tried to dig into it a bit and one would have to add a thermostat device to create an active cutoff.

Is there an error number on the display? Voltage sag issue?

 

[El Pescador]

I've added a few accessories that allows power draw when the vehicle is off. I don't plan to ever install a dual bank battery system so I'll always be drawing from the single starting battery bank. Wanted to ensure it cuts off loads leaving enough starting power. Even with a dual bank, it's probably a good idea to install a low voltage battery relay to protect from full depletion which will damage a battery.

Enter the Victron Battery Protect 65 (BP65 - 65amp) solid state voltage sensing relay. They have larger current handling models but this is all I'll need. It's extremely low parasitic draw and programmable to cut-off at different voltages for different applications and battery types. With a flooded lead acid battery, I have mine setup to disconnect conservatively at 12V (setting b8) Any accessory I install to the battery will now be installed to the load post here.

View attachment 2030197

I didn't like the big positive posts exposed to possibly cause an accidental short. I took some insulating jacket off my 4 gauge wire. Fits perfectly over the posts!. The other small black wire here is ground, for the Victron to operate. Also a shorting jumper that if removed, completely turns off the loads, sort of like a switch. Actually, a physical switch can be installed here to have it operate that way. Which is good if putting the car in storage for example, removing all parasitic loads. Overall, great quality unit for a reasonable price.

View attachment 2030192


Here's where some of the vehicle off loads will be coming from. Primarily for car camping where I may leave a cell booster on, warming blanket, USB charging, etc.

View attachment 2030201

I just purchased the same Victron BP for an almost identical set-up in my truck. It looks like you have a fuse (the big stinger) between the BP and the DC load side. Did you also put an in-line fuse between the battery and the BP? I know this thread is a few years old but if you get this, I'd appreciate hearing more on that since I can't see exactly how you have it connected to your starter battery. Also, it looks like you just ran the ground wires to the vehicle frame and not the battery post? Curious to know if you've had any issues with that as I'd prefer to keep my starter battery posts as free from clutter as possible.

 

[TeCKis300]

I just purchased the same Victron BP for an almost identical set-up in my truck. It looks like you have a fuse (the big stinger) between the BP and the DC load side. Did you also put an in-line fuse between the battery and the BP? I know this thread is a few years old but if you get this, I'd appreciate hearing more on that since I can't see exactly how you have it connected to your starter battery. Also, it looks like you just ran the ground wires to the vehicle frame and not the battery post? Curious to know if you've had any issues with that as I'd prefer to keep my starter battery posts as free from clutter as possible.

The fuse is actually between the starter battery and BP. Yes, ground wire was to the fender frame bolt.

I've since changed this setup to a SwitchPros as I have quite a few other electronics onboard. It handles the LVD functions, and much much more.

 

[mobi-arc]

Horrible de-rating at engine compartment temperatures...it must be very inexpensive if it has a 60% de-rating at moderate engine temps.

 

[TeCKis300]

Horrible de-rating at engine compartment temperatures...it must be very inexpensive if it has a 60% de-rating at moderate engine temps.

I think this is right. Although I didn't have issues, I agree there's potential here with underhood heat. May be better to mount this in the footwell/interior if there's concern. Phoenix is 110* today?!

 

[Alpacahill]

I've added a few accessories that allows power draw when the vehicle is off. I don't plan to ever install a dual bank battery system so I'll always be drawing from the single starting battery bank. Wanted to ensure it cuts off loads leaving enough starting power. Even with a dual bank, it's probably a good idea to install a low voltage battery relay to protect from full depletion which will damage a battery.

Enter the Victron Battery Protect 65 (BP65 - 65amp) solid state voltage sensing relay. They have larger current handling models but this is all I'll need. It's extremely low parasitic draw and programmable to cut-off at different voltages for different applications and battery types. With a flooded lead acid battery, I have mine setup to disconnect conservatively at 12V (setting b8) Any accessory I install to the battery will now be installed to the load post here.

View attachment 2030197

I didn't like the big positive posts exposed to possibly cause an accidental short. I took some insulating jacket off my 4 gauge wire. Fits perfectly over the posts!. The other small black wire here is ground, for the Victron to operate. Also a shorting jumper that if removed, completely turns off the loads, sort of like a switch. Actually, a physical switch can be installed here to have it operate that way. Which is good if putting the car in storage for example, removing all parasitic loads. Overall, great quality unit for a reasonable price.

View attachment 2030192


Here's where some of the vehicle off loads will be coming from. Primarily for car camping where I may leave a cell booster on, warming blanket, USB charging, etc.

View attachment 2030201

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[Alpacahill]

I just bought a BP-65. Am I installing this just after the battery? In other words, does the starter power run through it? Seems like it would handle amperage. If so, when there is a low voltage situation, how do you start the motor if the BP-75 is in disconnect mode?

 

[lx200inAR]

I just bought a BP-65. Am I installing this just after the battery? In other words, does the starter power run through it? Seems like it would handle amperage. If so, when there is a low voltage situation, how do you start the motor if the BP-75 is in disconnect mode?

Pretty sure this is installed between the battery and any extra accessory loads added to the vehicle. It’s not between the starter and battery.

 

[Alpacahill]

Pretty sure this is installed between the battery and any extra accessory loads added to the vehicle. It’s not between the starter and battery.

Thx. Just figured out starter draws 150-200 amp. Not looking to make fireworks this long weekend. I’m putting it in a boat that sits alone for weeks at a time. Bilge pumps or stereo memory can draw battery to ungodly low voltage.