| Manufacturer | Precision Circuits |
|---|---|
| Brand | Battle Born Batteries |
| Item Weight | 8.8 ounces |
| Package Dimensions | 5.5 x 1.9 x 1.7 inches |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | BIMLIFEPO4 |
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Coverage for accidental damage including drops, spills, and broken parts, as well as breakdowns (plans vary)
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Reviewed in the United States on February 11, 2019
I installed this BIM on my Winnebago Vista 27n class A motorhome when I upgraded my batteries to three Battle Born lithium’s. It replaced the factory BIM. The BIM came with no documentation, but I contacted Battle Born which provided a sample wiring diagram. I was able to install it using the existing wires with very little modifications.
This BIM has performed as designed. It allows the lithium batteries to be charged without over taxing the alternator and also correctly charges the wet cell starting battery. In addition it prevents the wet cell starting battery from being overcharged when plugged into shore power, or when running the generator.
The BIM is necessary when upgrading to several lithium batteries on a motorhome. Otherwise you might over work your alternator or under charge your new lithium batteries.
This BIM has performed as designed. It allows the lithium batteries to be charged without over taxing the alternator and also correctly charges the wet cell starting battery. In addition it prevents the wet cell starting battery from being overcharged when plugged into shore power, or when running the generator.
The BIM is necessary when upgrading to several lithium batteries on a motorhome. Otherwise you might over work your alternator or under charge your new lithium batteries.
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Reviewed in the United States on August 24, 2023
Reviewed in the United States on October 12, 2023
Reviewed in the United States on September 29, 2022
As far as no instructions, it is a pretty straight forward install. Other than the two primary battery connections, there is a terminal for ignition, battery boast switch, and ground. A great feature is the connection to the battery boast switch can be either a circuit to a 12 volt source or ground. Works both ways meaning you do not have to alter that regardless of which type you have. My previous battery manager had a connection marked gen-set. It took a communication to the company to find out that wire is no longer needed on the new unit. Just leave it disconnected and tied back.
In summary, once installed it works as described. But this unit is so poorly designed making replacement of an existing device extremely more difficult than it needs to be. Precision Circuits makes a lot of great items for the RV industry. But they really missed it with the design of this product.
Look closely if you are replacing another battery isolation device.
Reviewed in the United States on September 29, 2022
As I upgraded to Lithium batteries on my 2017 Winnebago motorhome, I thought it would be good to swap out the existing battery isolation manager with this one (to protect the alternator). From the photo, you can tell there is a lot going on in that area. I was happy to see that my old device was the same brand as this new one. (Precision Circuits Inc) However this one was so different it was like it was made by an entirely different company and made to be as different as possible. As mentioned by others, there are no instructions. But except for one thing, that is no problem. All terminals are labeled clearly. But first the physical issues. Who came up with this screwy shape. Plan on having to come up with new mounting method. Then the two main battery lugs were 3/16 inch closer together than the previous model. Required me to remount everything else off to the side. Then those lugs are too short. Considerably shorter that the old one to the point I couldn't even put the same terminals back on. Then the three low power connections are directly above the battery lugs and there bolts were so long there was no way I could put my battery cables on facing up like on the old one without shorting out. I had to modify those by cutting the bolts off with a Dremel tool.Reviewed in the United States on September 29, 2022
As far as no instructions, it is a pretty straight forward install. Other than the two primary battery connections, there is a terminal for ignition, battery boast switch, and ground. A great feature is the connection to the battery boast switch can be either a circuit to a 12 volt source or ground. Works both ways meaning you do not have to alter that regardless of which type you have. My previous battery manager had a connection marked gen-set. It took a communication to the company to find out that wire is no longer needed on the new unit. Just leave it disconnected and tied back.
In summary, once installed it works as described. But this unit is so poorly designed making replacement of an existing device extremely more difficult than it needs to be. Precision Circuits makes a lot of great items for the RV industry. But they really missed it with the design of this product.
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