Upgrading from a lead-acid bank to lithium changes the whole feel of an RV weekend or a long fishing day. A 12v 100ah Lithium Battery runs cooler, charges faster, and gives you nearly all of its rated capacity without the slow voltage sag you remember from old batteries. The hard part is choosing one that fits your box, your climate, and the gear you actually run, because not every 100Ah unit is built the same way.
The ten options below cover common form factors like Group 24 and Group 31, plus Bluetooth monitoring, low-temp charging protection, and multi-pack expansion. Each entry spells out who it suits best, where the trade-offs sit, and which sibling pick might serve a different rig better.
The Picks In Brief
Redodo 12V 100Ah LiFePO4 Battery, Group 31, Bluetooth
GrenerPower 12V 100Ah LiFePO4 Battery, Group 24
Redodo 12V 100Ah LiFePO4 Battery, Group 31
Redodo 2 Pack 12V 100Ah Trolling Motor LiFePO4 Battery
Redodo 12V 100Ah RV LiFePO4 Battery, Group 31, Bluetooth
Power Queen 2-Pack 12V 100Ah LiFePO4 Battery Group 24
Redodo 12V 100Ah Marine LiFePO4 Battery, Group 31
Redodo 2 Pack 12V 100Ah RV Lithium Battery, Group 31
Redodo 12V 100Ah LiFePO4 RV Battery, Group 31
Redodo 12.8V 100Ah LiFePO4 Battery with 14.6V 10A Charger
Meet The Standout Selections
Redodo’s Bluetooth-equipped Group 31 unit leans hard into the modern RV experience. The Group 31 footprint (a common battery box dimension) drops into most marine and trailer compartments without modification, and Bluetooth 5.0 connects to the Redodo app for real-time voltage, current, and state-of-charge reads. Compared to the stripped-down classic below, this one gives you a window into what’s actually happening inside the cells.
Built-in low-temperature cutoff stops charging below freezing, a useful guard for shoulder-season campers. The 100A BMS (battery management system, the onboard circuit that protects against overcharge and short circuits) handles continuous loads for most trolling motors and inverter setups in the 1000W range.
A Favorable Mix
- Bluetooth 5.0 app reads voltage, current, and capacity in real time
- Low-temperature charging cutoff protects cells in cold weather
- Group 31 case fits common RV and marine battery trays
- 100A BMS supports 1280W continuous loads for most RV essentials
- Remote power-off via app avoids draining cells while stored
Honest Caveats
- Bluetooth pairing can be finicky on first connection, a common complaint with app-linked batteries
- Heavier than the Power Queen Group 24 option, a factor in tight weight-sensitive rigs
Quick Facts
Best Suited To
RVers and boat owners who want app visibility and run rigs in climates that drop below freezing at night.
Where Another Pick Suits Better
Choose the Power Queen 2-Pack if your battery tray is a Group 24 size and you need two units ready to wire in parallel.
GrenerPower skips the app layer and pours the savings into the cell stack. Cylindrical Grade A+ LiFePO4 cells (lithium iron phosphate, the chemistry known for thermal stability and long cycle life) sit under a 100A BMS with five-layer protection covering overcharge, over-discharge, short-circuit, overcurrent, and overheat. Where Redodo’s Bluetooth unit sells convenience, this one sells raw cell quality at a tighter price.
The Group 24 footprint makes it a natural fit for compact installations where every inch of tray space counts. For shoppers building a backup bank at home, the simpler interface is a feature, not a limitation.
Reasons It Performs
- Grade A+ cylindrical cells tend to age gracefully under deep cycling
- 100A BMS handles typical RV and trolling loads
- Group 24 case swaps directly into common lead-acid boxes
- No app dependency means simpler troubleshooting over time
Things To Weigh
- No built-in Bluetooth means you’ll want a separate monitor for state-of-charge reads
- Single-pack configuration requires a second unit for 24V or 36V trolling setups
- Lacks low-temperature charging cutoff that the Redodo Bluetooth model includes
Right Fit For
Home backup and off-grid builders who care more about cell quality than connectivity and want Group 24 sizing.
A Better Fit Elsewhere
Pick the Redodo 12V 100Ah LiFePO4 Battery, Group 31, Bluetooth instead if you camp in freezing temps and want phone monitoring.
This is Redodo’s no-frills Group 31 workhorse, the same footprint as the Bluetooth version but stripped of the app module. The appeal is straightforward: Automotive Grade LiFePO4 cells, a low self-discharge rate, and a long cycle count that dwarfs what any lead-acid bank will deliver. For shoppers who want a drop-in replacement and don’t need phone monitoring, this is the textbook pick.
It’s also the platform other Redodo variants are built on, so the cell chemistry story is consistent across the brand.
Positive Takeaways
- Long cycle count at 80% depth-of-discharge (the percentage of capacity you actually drain per cycle)
- Low self-discharge holds charge during winter storage
- Standard Group 31 form factor for direct swap-in
- Proven chemistry shared across the Redodo line
Points To Keep In Mind
- No Bluetooth, so you rely on a separate monitor or voltage reads
- No low-temperature cutoff, so cold-weather charging needs external management
Whose Shelf It Belongs On
Classic RV and marine owners upgrading from lead-acid who prefer simplicity over connected features.
Look Elsewhere When
Reach for the Redodo Bluetooth Group 31 instead if winter camping or remote state-of-charge reads are part of your routine.
Boaters running 24V trolling setups get a turnkey answer here. Two Group 31 batteries wired in series deliver 24V with the amp-hour capacity of a single 100Ah unit. The pack-based pricing often works out friendlier than buying two singles, and Redodo’s BMS handles the continuous draw that trolling motors place on the bank during a long day on the water.
Where the single-unit picks above focus on one box, this one is built around the dual-battery reality of serious anglers.
Where It Delivers
- Matched pair simplifies 24V trolling motor wiring
- Doubling the amp-hours gives a full day of low-speed running
- Group 31 footprint fits standard marine trays
- Bulk pricing usually under two separate singles
Practical Considerations
- Two-pack orders sometimes ship separately, so plan for staggered delivery
- Heavier total weight than a single 12V rig, factor into smaller boat payloads
Feature Snapshot
Perfect Match For
Anglers who already know their trolling motor wants 24V and want batteries that arrive ready to pair.
Swap It Out When
The Redodo 12V 100Ah Marine LiFePO4 Battery, Group 31 fits better for 12V-only setups where a single bank is enough.
Positioned as the “next-gen smart” sibling to Redodo’s classic 100Ah Group 31, this version adds Bluetooth 5.0, an upgraded BMS, and low-temperature charging cutoff. The app shows voltage, current, and capacity in real time, so you can plan recharges around the data rather than guessing. If you’ve ever worried about a dead battery ruining a trip, that visibility pays for itself quickly.
The Group 31 footprint matches what most RV compartments already hold, making this a clean swap for aging AGMs.
The Good Stuff
- Real-time monitoring through the Redodo app
- Low-temperature cutoff halts charging below freezing
- Group 31 size fits existing RV trays
- Remote power-off via app prevents parasitic drain during storage
Trade Offs
- Smart features add cost over the no-app Group 31 sibling
- App connectivity can drop intermittently in metal battery boxes
At A Glance
Who It Suits Best
Full-time RVers and weekend warriors who treat battery data as part of the trip-planning checklist.
Not Your Match When
The Redodo 12V 100Ah RV Lithium Battery 2 Pack serves you better if your system already calls for a parallel battery bank.
Where the GrenerPower pick gives you one Group 24 battery, Power Queen bundles two. The smaller Group 24 form factor weighs noticeably less than Group 31 equivalents, an advantage in trailers where tongue weight matters. Each unit is rated for full 100% depth-of-discharge use, so the usable energy roughly doubles what you’d get from a same-size AGM.
For RV trailer owners replacing a pair of lead-acids, this is the cleanest physical match.
Standout Benefits
- True drop-in Group 24 sizing
- Lighter than AGM equivalents, easier on tongue weight
- Full usable capacity per cycle without harming the cells
- Two-pack supports parallel wiring out of the box
Small Caveats
- No Bluetooth means external monitoring is necessary for accurate state-of-charge
- Group 24 height may not clear all compartment lids, so a quick tape-measure check is worth the effort
Right Fit For
Trailer owners replacing twin lead-acids who want lithium capacity without rewiring trays or upgrading compartments.
Reach For A Different Pick When
Choose the Redodo 12V 100Ah RV LiFePO4 Battery, Group 31, Bluetooth if your tray holds Group 31 and you want app monitoring.
Redodo’s marine-tilted Group 31 unit is built around a 100A continuous BMS, meaning it can sustain 1280W of draw without tripping protection. EV-grade LiFePO4 cells add a long lifespan claim, and the broad protection suite covers overcharge, over-discharge, short circuits, and overheating. For boat owners running a single 12V trolling motor or a house bank alongside a starting battery, this one is tuned for the load profile.
It is the spiritual cousin to the 2-pack above, but for setups that only need a single box.
Bright Spots
- 100A continuous output for sustained trolling draws
- EV-grade cells aim for long service life
- Group 31 case matches standard marine trays
- Full protection suite inside the BMS
Points To Note
- Single 12V unit requires a second battery for 24V trolling systems
- No built-in app monitoring, common at this Redodo tier
Best Suited To
Boaters with 12V trolling setups or those building a house bank separate from the engine starting battery.
Skip It When
Reach for the Redodo 2 Pack 12V 100Ah Trolling Motor LiFePO4 Battery if your trolling motor runs on 24V or higher.
This two-pack targets system builders. Two Group 31 units paired in parallel give 2560Wh, and Redodo rates the configuration for scaling up to 4P4S (four packs in parallel, four strings in series) for 48V solar arrays. For anyone building an off-grid power wall or a heavy-duty RV bank, that headroom matters. The automotive-grade LiFePO4 cell chemistry aims for a decade of service.
Same chemistry story as the singles above, but priced and packaged for the system-builder crowd.
Real-World Strengths
- Scalable up to 4P4S for high-capacity solar banks
- 2560Wh combined capacity in parallel
- Automotive-grade LiFePO4 cells aim for long cycle count
- Group 31 footprint simplifies tray layout
Honest Caveats
- Multi-pack orders sometimes ship separately
- Heavier total weight than a single-battery swap, worth measuring against vehicle payload ratings
Feature Card
Who Should Grab It
Off-grid solar system builders and RV owners planning a parallel bank they can grow over time.
Consider Something Else When
The Redodo 12.8V 100Ah LiFePO4 Battery with 14.6V 10A Lithium Charger is the better starting point for first-time lithium upgraders who need a charger included.
Redodo’s heavy-duty Group 31 framing emphasizes the workhorse numbers: 1280Wh per unit, 4000-plus deep cycles, and a 100A BMS rated for 1280W of continuous output. For full-time RVers running a residential fridge, lighting, and a laptop off the bank, those numbers translate directly into usable daily capacity. The standard Group 31 case fits existing RV trays with no fabrication.
Compared to the Bluetooth-equipped RV unit, this one keeps the focus on raw capacity over connected features.
The Upside
- 1280Wh usable energy per battery
- Rated for 4000-plus deep cycles at full depth-of-discharge
- 100A BMS handles 1280W continuous loads
- Standard Group 31 size for direct drop-in
Worth Bearing In Mind
- No Bluetooth means external monitoring is required for accurate state-of-charge
- Heavier than Group 24 alternatives like the Power Queen
Made For
Long-haul RVers, off-grid cabin owners, and anyone running high daily loads who values cycle life over connected features.
Another Choice May Suit
Pick the Redodo 12V 100Ah RV LiFePO4 Battery, Group 31, Bluetooth if you want phone monitoring alongside the same Group 31 footprint.
Newcomers to lithium often hit the same wall: a 12V lithium battery cannot safely charge on a lead-acid charger, which can damage the cells. This bundle solves that with a dedicated 14.6V 10A charger matched to the battery chemistry. Same long-cycle LiFePO4 cells as other Redodo units, just paired with the right charger in one box.
It is the lowest-friction way to make the jump from AGM without buying components separately.
Positive Points
- Dedicated 14.6V 10A lithium charger included
- LiFePO4 chemistry aims for thousands of deep cycles
- Bundle pricing often beats buying battery and charger separately
- Beginner-friendly first lithium setup
Smaller Limitations
- 10A charger means slower refill times than 20A or higher aftermarket units
- Single-pack offering, parallel wiring requires a second unit
Feature Snapshot
Perfect Match For
First-time lithium upgraders who want a matched battery-and-charger bundle and don’t want to research chargers separately.
Swap It Out When
Choose the Redodo 2 Pack 12V 100Ah RV Lithium Battery, Group 31 if your build already calls for parallel capacity and you have a charger.
What To Know Before Choosing A 12v 100ah Lithium Battery
Form factor comes first. Measure the battery tray before anything else, because Group 24 and Group 31 share roughly similar footprints but differ in height and terminal placement. A millimeter mismatch on the lid is a frustrating return. If your existing compartment holds a Group 24 lead-acid, the GrenerPower and Power Queen options are the natural fits; if it holds Group 31, the rest of this list opens up.
Cold-weather behavior is the next real decision point. Standard LiFePO4 cells can discharge in freezing temps, but charging below 32°F can permanently damage them. Any battery in this list with a low-temperature charging cutoff (the Redodo Bluetooth variants, specifically) handles that automatically. For winter campers, that single feature is often worth the upcharge over a no-app sibling.
Finally, look at expansion plans. A single 100Ah battery covers light weekend duty, but full-time RVing or off-grid solar usually wants a parallel bank of two or more. Two-pack options like the Redodo trolling or RV bundles keep the door open for that growth, and they tend to price better than two singles bought separately.
Key Considerations Across These Picks
Common Shopping Slip Ups
The most frequent mistake is grabbing a lithium battery without confirming the charger’s voltage profile. Lead-acid chargers push higher absorption voltages that can stress LiFePO4 cells over time. The bundled Redodo 12.8V option avoids that, and most lithium-specific aftermarket chargers list the correct profile on the spec sheet. The second common miss is ignoring terminal orientation, which differs between Group 24 and Group 31 layouts and forces cable swaps that nobody wants mid-install.
Why Top Tier Costs More
Higher-tier models in this category tend to add Bluetooth monitoring, low-temperature charging cutoff, or upgraded BMS components. Each adds real-world value: Bluetooth for visibility, low-temp protection for winter use, stronger BMS for inverter loads. The upgrade is most justified for full-time RVers and cold-climate campers. For occasional fair-weather use, the no-frills models deliver the same core chemistry at a leaner price.
Frequently Asked Questions
How long will a 12v 100ah Lithium Battery actually last?
Most LiFePO4 batteries in this category are rated for thousands of deep cycles at 80% depth-of-discharge, often translating to ten years of regular use. Real lifespan depends on how deeply you discharge and how hot the battery runs during charging, so a shaded install with moderate daily cycling outlasts a high-draw, high-heat rig.
Can I replace my lead-acid battery directly with one of these?
In most cases, yes, especially with standard Group 24 or Group 31 sizes. The main change is the charger: lithium batteries want a dedicated 14.6V lithium charger rather than a lead-acid profile. Some RVs and boats already ship with lithium-compatible charging, but it’s worth confirming before swapping.
Is Bluetooth monitoring worth the extra cost?
For most weekend users, a basic voltmeter or shunt monitor covers the essentials. For full-timers or anyone running high daily loads, Bluetooth adds convenience that pays off in trip-planning and storage management. It’s a nice-to-have, not a must-have.
Can these batteries be mounted in any position?
LiFePO4 chemistry is sealed and orientation-tolerant, so sideways or upright mounting is fine in most installs. Check the specific model’s manual for ventilation and terminal clearance, since heat dissipation still matters under heavy inverter loads.
Do I need a special charger for solar setups?
Solar charge controllers need a lithium charging profile to play well with these batteries. Most modern controllers have selectable battery types, and LiFePO4 is a standard option. The bundled Redodo charger handles shore-power charging separately from the solar side.
Final Verdict
The right 12v 100ah Lithium Battery depends on three honest questions: what size tray do you have, how cold does it get where you camp, and how much daily capacity do you actually need. Match those to the form factor, cold-weather protection, and pack sizing above, and the choice usually narrows itself. The good news is that the LiFePO4 category has matured enough that any of these ten picks will outperform the lead-acid you’re probably replacing.