Newmar BI-100 12v Battery Integrator
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Newmar BI-100 12v Battery Integrator Product Description
Unlock Reliable Power Management for Your Dual Battery Setup
Imagine never worrying about your house batteries draining your starter battery—or vice versa—while ensuring both get a full, efficient charge every time. The Newmar BI-100 steps in as your smart solution for seamless battery integration in demanding environments like boats, RVs, and off-grid adventures. Unlike basic setups that risk cross-discharge or inefficient charging, this device automatically links your batteries only when a strong charge source is detected, then isolates them to protect runtime and longevity.
Boat owners rave about how it maximizes alternator output without wasting energy, while RV enthusiasts appreciate the peace of mind during extended trips. By eliminating voltage drops common in older diode systems, your batteries charge faster and hold more usable capacity, keeping lights on, appliances running, and engines starting effortlessly.
How the BI-100 Intelligently Manages Your Batteries
At its core, this battery integrator uses a heavy-duty contactor triggered by voltage sensing. When your alternator, shore power charger, or solar controller pushes voltage above 13.2V (for 12V systems), it closes the circuit, combining banks into one massive reserve for optimal charging. Drop below that threshold? It instantly isolates them, preventing the stronger bank from feeding the weaker one.
Picture this: You're underway, alternator humming at 14V—the BI-100 unites everything for a thorough top-up. Anchor drops, voltage dips to 12.8V, and isolation kicks in. Your house bank powers the fridge and stereo solo, while the starter stays primed. Add a quick-start boost option via ignition signal, and you've got emergency assist from the house bank if needed.
For multi-bank systems, stack additional units effortlessly, scaling protection across engine start, house, thruster, or generator batteries. No more guesswork—just reliable, automatic operation built for harsh marine conditions.
Standout Features That Deliver Real-World Performance
- Zero Voltage Drop Charging: Silver-plated contacts handle 100A continuous without the 0.7V loss of diodes, meaning fuller charges and happier batteries.
- Marine-Tough Build: Epoxy-sealed electronics and rugged solenoid shrug off moisture, vibration, and salt air—perfect for rough seas or dusty trails.
- Simple Integration: Just three wires for dual banks (positive from each, plus ground). Compact design mounts anywhere, any orientation.
- Status at a Glance: Optional LED wire lets you monitor when banks are linked.
- Boost Capability: Ties banks during cranking for that extra oomph if your starter's low, wired via key switch.
- Scalable Design: Add units for three-plus banks, ideal for complex setups like yachts or custom RVs.
Perfect for These Power-Hungry Scenarios
Marine Use: Charge house and start batteries from a single alternator, isolate for trolling motors or electronics without starter drain.
RV and Overland: Multiply inverter-charger output to keep chassis and coach batteries separate during boondocking.
Solar/Off-Grid: Combine banks for solar bulk charging, then isolate for selective use—extends overall system life.
Users report 20-30% better charge efficiency over diode isolators, translating to longer trips between hooks-ups.
Effortless Setup for Lasting Results
Pro tip: Mount near your batteries to minimize cable runs—use 4-6 AWG wire for full 100A capacity. Ground to chassis or battery negative. For boost, tap the starter solenoid signal. Test by monitoring voltage across banks; integration should happen seamlessly above 13.2V. Pair with quality fuses (150A recommended) for safety. In salty environments, annual contactor inspection keeps it humming.
This isn't just wiring—it's investing in battery health. Healthier batteries mean fewer replacements and more reliable power when you need it most.
Frequently Asked Questions
What makes the Newmar BI-100 better than a traditional diode battery isolator?
Diode isolators cause a voltage drop of about 0.7V, leading to undercharging. The BI-100 uses a low-resistance contactor for full voltage passthrough, ensuring efficient charging without waste.
Does the BI-100 work with 24V systems?
The BI-100 is optimized for 12V setups with a 13.2V trigger. For 24V, check Newmar's higher-voltage models like the BI-200 series, which trigger at 26.4V.
Can I use this for more than two battery banks?
Yes, install one BI-100 per additional bank beyond the primary, creating a star configuration where each secondary integrates independently with the main bank.
How do I know when the batteries are integrated?
Wire the optional remote indicator terminal to an LED panel light. It glows when the contactor closes above the sense voltage.
Is the BI-100 suitable for solar charging setups?
Absolutely—solar controllers often hit 14V+ during bulk charge, triggering integration. It isolates during float or low-light, protecting banks from uneven discharge.
What wire size should I use for installation?
For up to 100A, 4 AWG is ideal for short runs (<10ft); go 2 AWG for longer. Always fuse positives near batteries at 125-150A.
Will it provide a starting boost if my primary battery is weak?
Yes, connect the override terminal to your starter circuit. During cranking, it momentarily combines banks if house voltage is sufficient.
Use of multiple battery banks dictates that the batteries be connected or "integrated" only whenever a charge voltage is present so that they may be charged simultaneously, then disconnected or "isolated" when in use to allow for selective discharge and avoid having the secondary or standby battery drain into the primary battery.
The new Battery Integrator performs this function automatically, acting as a "smart" switch to connect independent battery banks only when a charging voltage is present. Otherwise, they are isolated, and discharge between banks is prevented.
The traditional rugged and reliable diode isolator can also be used for this function, as it also maintains isolation between banks and allows charging from multiple sources. However, one drawback is inefficiency when voltage is lost as current passes through the diodes, resulting in undercharge if the charging source does not compensate for the voltage drop.
The Battery Integrator remedies this by use of an extremely low resistance contactor which causes no voltage drop in the charging system, while the multiple batteries are charged as a single bank whenever a charging source of approximately 13.2 VDC or 26.4 VDC or greater is present (depending on model).
When the alternator or charger is off or a large load causes the voltage to drop below the disconnect point the unit breaks the common tie between the banks. This allows selective battery discharge and prevents "dumping" of a higher-charged bank into a lower-charged bank.
The unit may also be activated through the key starter or a manual switch to provide an added "boost" from the secondary battery whenever the starter is engaged and the unit senses there is sufficient voltage in that battery to provide an assist.
For systems with more than two banks, an additional unit may be installed for each additional bank to provide the same isolation and integration as described above.
The Battery Integrator is ideal for multiplying the single charging output of an inverter-charger to maintain both the house bank and an engine start bank, then to isolate them during inverter function, so current is drawn from the house bank only.
Features
- Enables charging of two separate banks without voltage drop, yet maintains 100% isolation at all other times. For systems of three banks or more, an additional unit may be installed for each additional bank
- Heavy duty silver-plated contactor, continuous duty rated to 100 amps
- Voltage sense circuit, epoxy encapsulated and heavy duty continuous rated solenoid are all designed for use in marine environments
- Easy-to-install: compact size - may be mounted with any orientation
- Easy three-wire hook up for two bank systems (BATT +, BATT +, GROUND)
- Terminal for optional wiring of remote light indicating when battery banks are integrated
- Optional internal connection can be wired though key starter or manual over ride switch, tying battery banks together for extra boost during engine start
Using multiple battery packs requires connecting or "integrating" the batteries only when a charging voltage is present, so that they can be charged at the same time, and then disconnected or charged.
Frequently Asked Questions (FAQ) About Newmar BI-100 12v Battery Integrator
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Who is the NewMar?
How to describe Newmar BI-100 12v Battery Integrator?
What is the highlights of Newmar BI-100 12v Battery Integrator?
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Newmar BI-100 12v Battery Integrator Technical Specifications
| Type: | |
|---|---|
| Vendor: |
NewMar |
| Weight: |
2.0 lb |
Newmar BI-100 12v Battery Integrator User Reviews
Newmar BI-100 12v Battery Integrator Shipping & Return
| Shipping Weight: |
2.0 lb |
|---|---|
| Box Sizes: |
1.00 (h) x 1.00 (w) x 1.00 (l) |
| Cubic Feet: |
1.0 |
| Returnable: |
Yes |
| USPS First Class: |
Yes |
| P65: |
Yes |
For detailed shipping policy please check our Shipping Policy and you can find our Return and Refund Policy here.