Redodo 12V100AH LiFePO4 Battery Review: Fits BCI Group 31 Battery Boxes

What the Redodo 12V100AH Is, and Who For

If your battery bay is sized for a BCI Group 31 battery box, the 13L x 6.77W x 8.43H inch case is the first number that matters. Redodo 12V100AH LiFePO4 Battery delivers 100Ah and a 100A BMS, so it suits buyers who need a 12V pack with that discharge ceiling in a fixed space. We screened 55 LiFePO4 batteries and selected 15 for full review. This one has 924 buyer ratings, the 3rd most of the 55 screened. Our full review focuses on the products that passed screening and drew the most buyer ratings, with no more than 2 per brand. If you are replacing lead-acid in a tight compartment, measure fit before you weigh cycle-life claims.

The Short Answer on the Redodo 12V100AH

Best for: you need a 12V LiFePO4 battery with 100Ah capacity, an M8 terminal, and BCI Group 31 fit for light-to-moderate off-grid loads.

Redodo 12V100AH is a reasonable pick around $199.99 if you want 100Ah in a 13-inch case and a 100A discharge limit.

• Pro: The 100Ah capacity suits trolling motors, RV house loads, and solar storage at the category baseline.
• Pro: Its 13-inch length helps if your battery tray needs a BCI Group 31 footprint.
• Pro: The built-in 100A BMS covers overcharge, over-discharge, over-current, short circuit, and high temperature protection.
• Con: The 100Ah rating is short of longer multi-day needs, so it will not cover a full 4-day van or RV setup on its own.
• Con: The 100A discharge limit leaves little headroom for heavier inverter loads, so a space heater or microwave can push it close to its ceiling.

Don’t buy this if: you need one battery to cover a 4-day weekend or a larger off-grid load that usually calls for 200Ah.

Price assessment: $199.99 is fair for a 100Ah 12V LiFePO4 battery with a built-in BMS and BCI Group 31 compatibility.

For high-capacity needs, explore the NewtiPower 12V 330ah spec breakdown.

The Numbers on the Spec Sheet

Capacity is the deciding spec that separates this Redodo 12V100AH from smaller 12V LiFePO4 batteries. It measures how much electric charge the battery can store and deliver over time.

Budget-conscious shoppers can find the best lifepo4 battery under $300 options.

Before You Buy: LiFePO4 battery Checklist

The first thing to check is fit: Redodo 12V100AH measures 13L x 6.77W x 8.43H inches, so a Group 31 box is the right starting point, but your tray still needs those dimensions. The surprise here is weight, not capacity; the listing weight is 25.4 pounds, which can matter more than buyers expect when they plan mounting or carry-in access.

• ☐ Confirm the box length, width, and height — 13L x 6.77W x 8.43H inches — or you may have to return it and reorder a smaller battery.
• ☐ Check your charger profile — 12V LiFePO4 / 12.8V — because a lead-acid profile can leave capacity unused or stress the pack.
• ☐ Measure the current your inverter or motor can demand — 100A BMS — or the battery can trip under surge and shut down your load.
• ☐ Budget for cold-weather charging protection — charging below 0°C is the failure mode to avoid — or you risk plating lithium and permanently damaging the battery.
• ☐ Confirm you need only one battery — batteries per pack: 1 — or you will need to buy additional units for a larger bank.

Do not buy this if you need a larger reserve than 100Ah or you cannot match the 13-inch case length to your space.

If your application involves freezing temperatures, view the best lifepo4 battery for cold weather comparison.

Performance in Practical Terms

How a Group 31 fit simplifies battery box planning

Redodo 12V100AH fits a BCI Group 31 battery box, so you can plan around a common tray size instead of guessing at fit. Its 13L x 6.77W x 8.43H inch case gives you a clear footprint to compare against the space in your RV, boat, or solar enclosure before you order.

The 100Ah capacity is enough for smaller off-grid loads and short-run use, but it is not a long-weekend reserve by itself. For a trolling motor, RV house load, or solar bank, check your own amp-hour need first: if your setup sits near 100Ah, this battery can cover the lighter end of the job; if you need 200Ah or more, you will need a larger pack or a different layout.

What a 100A BMS means for higher-draw loads

Redodo 12V100AH states a 100A BMS, so you can pair it with gear that asks for a 100-amp continuous draw without exceeding the battery’s stated current limit. That matters for higher-draw loads such as a trolling motor at full thrust or a 12V inverter load that stays near the battery’s continuous output rating.

The same 100A limit also sets the edge of the pack’s comfort zone for surge-heavy appliances. If your inverter or motor routinely needs more than 100 amps, this battery is the wrong size for that job; if your load stays at or below that figure, the pack matches the current demand without forcing you into parallel wiring just to reach the basic draw.

How cycle life and self-discharge affect storage

Redodo 12V100AH gives you 4,000 cycles at 100% DOD, 6,000 cycles at 80% DOD, and 15,000 cycles at 60% DOD, so deeper daily use shortens the service-life figure while lighter use stretches it. Its 3% self-discharge rate also makes it a better fit for storage between trips than for a battery that must be topped up every few days.

Those numbers favor buyers who cycle the battery often and store it between outings, because the pack is rated for long repeat use and slow idle loss. If your setup sits unused for weeks, the low self-discharge helps preserve charge; if you plan to drain it hard every day, the cycle-life table shows why shallower discharge leaves more life on the table.

The Redodo 12V100AH Job by Job: What Its Figures Cover

The Redodo 12V100AH against the jobs buyers ask about, worked out from its listed capacity and maximum continuous discharge current and a typical need for each job.

You might also consider the Power Queen P12V200-100-Pack4 review.

Where the Redodo 12V100AH Sits Among the Alternatives

Redodo’s clearest edge is capacity and discharge in the same 100Ah, 100A package. It matches the 100Ah baseline for practical 12V use, and its 13-inch length is the longest among the listings that state that dimension.

• Against ECO-WORTHY 12.8V20AH, Redodo gives you five times the capacity and a much higher 100A discharge rating, while both list the same $199.99 price.
• Against GOLDENMATE 12V 100Ah LiFePO4 Battery, capacity ties at 100Ah and discharge ties at 100A, so the difference comes down to size: Redodo lists 13 inches, while GOLDENMATE lists 12.91 inches.
• Against Timeusb 12V 100Ah LiFePO4 Battery, the capacity and 100A discharge rating match, but Redodo is around $20 more expensive.
• Against ECO-WORTHY 12V 30Ah LiFePO4 Battery, Redodo offers more capacity and a 100A discharge rating instead of 30Ah and a 20A limit, though it costs around $20 more.
• Against Redodo 12.8V 50Ah Lithium Portable Battery, this model doubles the capacity and lists a 100A discharge limit instead of 50A, with the price about $21 higher.
• On buyer ratings, Redodo ranks second highest in this group, with a 4.5 average from 924 ratings.

If you want the lowest price first, Timeusb 12V 100Ah LiFePO4 Battery is the better pick here. It keeps the same 100Ah capacity and 100A discharge rating, while costing less.

If you need a larger capacity, see our full review of the 12v140ah-LF.

What It Takes to Run the Redodo 12V100AH

What it takes to get Redodo 12V100AH running

A 12V charging source is the first thing you need, because the battery does nothing useful without one.

1. Measure your battery box for a 13-inch case length before you mount Redodo 12V100AH.
2. Place the battery in a BCI Group 31 battery box, since that is the stated fit.
3. Connect an M8 charger and fuse the wiring for the 100A discharge limit.
4. Set the charger to 12V, not another system voltage.
5. Confirm the terminal layout before final hookup; the listing states M8 terminals, but not the cable lug size.

Do you need a charger and monitor for this setup? The charger has to match 12V, and the battery monitor has to match 100Ah.

Warranty and support: what to check

Cover differs by seller and country.

• Confirm the return window before it closes, because the 100A BMS is built in and not user-serviceable.
• Confirm who handles support for the BCI Group 31 fit, because a box mismatch can stop installation.
• Confirm whether the seller covers terminal or connection issues, because the battery uses M8 terminals.
• Confirm whether shipping damage claims need photos of the 13-inch case and the label, because size and fit matter here.

On the day it arrives, check the case, terminals, and box fit before you install or charge Redodo 12V100AH.

Questions Buyers Ask About This Lithium Phosphate Battery

Is the 22 lb weight a real advantage for a portable or marine setup?

Yes, the 22.04 lb weight helps in portable or marine setups because weight affects lifting, mounting, and repositioning. Redodo 12V100AH is far lighter than the heaviest 12V LiFePO4 listings we screened, which ran to 74.03 lb, so it is easier to handle when space is tight.

The trade-off is that weight alone does not tell you runtime or discharge ability. For those jobs, the 100Ah capacity and 100A continuous discharge rating matter more than the weight figure.

Does Redodo 12V100AH fit a BCI Group 31 battery box?

Yes, Redodo 12V100AH is listed as compatible with a BCI Group 31 battery box. Its dimensions are 13L x 6.77W x 8.43H inches, so fit still depends on the box’s inside measurements and cable clearance.

That size matters more than the 22.04 lb weight when you are choosing a tray or enclosure. The length is the main dimension to compare first.

How much current can Redodo 12V100AH supply continuously?

Redodo 12V100AH supplies 100 Amps continuously through its 100A BMS. That makes it suitable for loads that need sustained current near that level, but not for setups that need more headroom than 100A.

The BMS also lists overcharge, over-discharge, over-current, short circuit, and high temperature protection. Those protections matter for system limits, but they do not change the 100A continuous output figure.

What does the 100Ah capacity mean for a 12V setup?

The 100Ah capacity means Redodo 12V100AH sits at the common baseline where a 12V LiFePO4 battery becomes practical for trolling motors, RV house loads, and solar storage. It is enough for lighter one-battery jobs, but the 200Ah and 280Ah reference points mark larger load targets than this pack states.

For a CPAP machine, the worked estimate is about 0.7 to 1 night from 80 to 120Ah for one night at 85% usable. For a weekend RV or a long weekend fridge-and-lights setup, the same capacity is short of the stated need.

Is the Redodo 12V100AH Right for You?

Who the Redodo 12V100AH suits and the jobs it is the wrong choice for, listed below with the reason for each.

Where to Buy This LFP battery

Lifepo4 batteries are sold by the retailers below – we do not track which of them has the Redodo 12V100AH in stock, so check availability and the current price with the retailer before making a trip.

• Renogy (online only) — specialist retailer for lithium batteries and solar storage
• Eco-Worthy (online only) — specialist retailer for lithium batteries and off-grid power
• Northern Tool (online and physical stores) — business and trade accounts
• Amazon (online only) — breadth of range
• Home Depot (online and physical stores) — in-store returns
• Walmart (online and physical stores) — broad marketplace assortment
• Battery Mart (online only) — specialist staff

Final Verdict on the Redodo 12V100AH

You should choose this Redodo 12V100AH if you need a 12V LiFePO4 battery with 100Ah capacity and a 100A BMS for moderate inverter or motor loads. Around $199.99 makes it a practical 100Ah option, and the 13-inch length matters if your tray is built around BCI Group 31 sizing.

The strongest data point here is the 100Ah capacity paired with 100A continuous output. That combination is why it can cover a CPAP overnight at the lighter end, and why it is not the right pick for a full weekend or multi-day outage without a larger battery bank.

Skip it if: you need 4 days of fridge and lights, or you want one battery to carry a full weekend off shore power.