Redodo and LiTime sell 12V 100Ah LiFePO4 batteries that look almost identical on paper: both store 1,280Wh, use a 100A battery management system, fit a Group 31 footprint of 13 × 6.77 × 8.43 inches, carry IP65 ratings and promise 4,000+ cycles at 100% depth of discharge with a five-year warranty, according to each company’s product page and spec table. The differences are in the details: LiTime lists a higher one-second surge (400A versus Redodo’s 300A), a slightly lower charge voltage and a heavier case at 24.25 pounds, while Redodo’s spec table lists 22.05 pounds and its store price runs about $90 lower at the time of writing. I own and use LiTime batteries and chargers, so this comparison pairs both makers’ published specs with what I’ve seen from LiTime gear, plus worked runtime and charging examples.
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Specs come from Redodo’s and LiTime’s official product pages for the standard (non-Bluetooth, non-heated) 12V 100Ah models, and from the Amazon listings for the Redodo 12V 100Ah and LiTime 12V 100Ah Group 31. I haven’t run these two 100Ah models side by side, so runtimes below are labeled estimates. Here’s my LiTime charger test on one of my LiTime batteries:
Quick verdict
- Redodo 12V 100Ah: the value pick. Same capacity, BMS rating and cycle claim for less money, and a couple of pounds lighter by its spec table.
- LiTime 12V 100Ah: worth the extra if you want the higher 400A one-second surge for inverter starts, a slightly gentler 14.4V charge spec, or you’re adding to an existing LiTime bank and want matching batteries.
Redodo vs LiTime 12V 100Ah: spec table
| Spec | Redodo 12V 100Ah | LiTime 12V 100Ah (Group 31) |
|---|---|---|
| Nominal voltage / capacity | 12.8V / 100Ah | 12.8V / 100Ah |
| Energy | 1,280Wh | 1,280Wh |
| Cells | LiFePO4 prismatic, “EV Grade-A” | LiFePO4, “EV Grade A” |
| Rated cycles | 4,000+ at 100% DoD | 4,000+ at 100% DoD |
| BMS / continuous charge and discharge | 100A / 100A | 100A / 100A |
| Max continuous output | 1,280W | 1,280W |
| Short surge | 300A for 5 seconds (300A @ 1 second listed as surge) | 400A for 1 second |
| Charge voltage | 14.6V | 14.4V ± 0.2V |
| Recommended charge current | 20A (0.2C) | 20A |
| Charge temperature | 32–122°F | 32–122°F |
| Discharge temperature | −4–140°F | −4–140°F |
| Low-temperature charge protection | No (standard model) | Not listed (standard model) |
| Series / parallel | Up to 4S4P (51.2V 400Ah, 20.48kWh) | Up to 4S4P (20.48kWh) |
| Terminals | M8 | M8 bolts |
| Size | 13 × 6.77 × 8.43 in | 13 × 6.77 × 8.43 in |
| Weight | 22.05 lb (spec table; product copy says about 25 lb) | 24.25 lb |
| Water/dust rating | IP65 | IP65 |
| Warranty | 5 years | 5 years |
| Store price at time of writing | $242.89 | $335.99 |
Both companies also sell Bluetooth, self-heating and “mini” versions at different prices. This comparison is only the standard models.
Capacity and real usable energy
Both batteries are rated for 1,280Wh and 100% depth of discharge. In practice, many owners stop a little short of empty to leave headroom for the BMS cutoff. For planning, I use about 95% of rated capacity at the battery terminals (about 1,216Wh) and about 85% when running AC loads through an inverter (about 1,088Wh). Those are my estimates, not maker figures. Redodo says its battery “maintains 101 to 105 amps of continuous capacity,” which suggests it ships with a bit of margin over the 100Ah rating.
Worked runtime estimates (either battery)
| Load | Draw | Estimated runtime* |
|---|---|---|
| 12V compressor fridge (average) | 45W | ≈ 27 hr |
| Starlink Mini on DC | 30W | ≈ 40 hr |
| CPAP on DC, no humidifier | 40W | ≈ 30 hr |
| Trolling motor, half speed | About 25A | ≈ 3.8 hr |
| Trolling motor, full speed (55 lb thrust class) | About 50A | ≈ 1.9 hr |
| Laptop + router via inverter | 100W AC | ≈ 11 hr |
| Microwave via inverter | 1,000W AC | ≈ 1 hr |
*Estimates. DC loads: 1,216Wh ÷ watts (or 95Ah ÷ amps). AC loads: 1,088Wh ÷ watts. Trolling motor draw varies by model and speed; check your motor’s amp chart. Both makers recommend their batteries for 30–70 lb thrust trolling motors and say they aren’t for engine starting.
Surge: why 300A vs 400A can matter
The continuous rating is identical: 100A, or about 1,280W. Where they differ is the brief spike the BMS tolerates. Redodo lists 300A for 5 seconds; LiTime lists 400A for 1 second. Inverters pull a large current for a moment when a motor or compressor starts. A 1,000W inverter starting a small fridge or a power tool can briefly ask for well over 100A on the 12V side. A higher short surge makes nuisance BMS trips less likely, though either battery should stay under 100A for anything that runs continuously. My guide on sizing an inverter for watts, VA and surge walks through the math, and the short version is that a single 100Ah battery pairs best with an inverter of about 1,000W.
Charging: voltage, current and time
Redodo specifies a 14.6V charge; LiTime specifies 14.4V ± 0.2V, so 14.2–14.6V. Any charger with a LiFePO4 profile in that range works for both. Both recommend 20A as the everyday charge current.
| Charge source | Typical current | Empty to full (estimate)* |
|---|---|---|
| 10A LiFePO4 charger | 10A | ≈ 10–11 hr |
| 20A LiFePO4 charger (both makers’ recommendation) | 20A | ≈ 5–5.5 hr |
| DC-DC charger from the alternator | 30A | ≈ 3.5 hr |
| 100W solar panel (about 70W real) | ≈ 5A | ≈ 18 hr of good sun (2–3 days) |
| 200W solar (about 140W real) | ≈ 10A | ≈ 9 hr (about 2 sunny days) |
| 400W solar (about 280W real) | ≈ 20A | ≈ 4.6 hr |
*Estimates: 100Ah ÷ charge amps, plus a little time for the final absorption stage. Redodo says a 20A charger fully charges its battery in about five hours, which matches. I documented a full recovery charge on a smaller LiTime battery in my LiTime 12V 50Ah review, and the charger I used is covered in my LiTime 20A charger review.
Charger settings for both
- Charge (absorption) voltage: 14.4V is a safe middle ground for both; Redodo’s spec allows 14.6V.
- Float: LiFePO4 doesn’t need float; if your charger requires one, set it low (around 13.5V).
- Equalization: disable it.
- Low-temperature charging: neither standard model lists low-temperature charge protection, and both list a 32°F minimum charge temperature, so use a charger or controller with a temperature sensor, or buy the self-heating version if you’ll charge in freezing weather.
If you use Victron gear, my guide to Victron MPPT LiFePO4 settings shows where each of these lives in the app.
Building a bank: series and parallel
Both makers allow up to four in series and four in parallel (4S4P), for 51.2V and 400Ah, or 20.48kWh. Common setups:
| Configuration | System voltage | Capacity | Energy |
|---|---|---|---|
| 2 in parallel (2P) | 12.8V | 200Ah | 2,560Wh |
| 2 in series (2S) | 25.6V | 100Ah | 2,560Wh |
| 4 in series (4S) | 51.2V | 100Ah | 5,120Wh |
| 4S4P (16 batteries) | 51.2V | 400Ah | 20,480Wh |
Don’t mix brands in one bank. Even with matching specs, Redodo and LiTime batteries have different BMS designs and internal resistance, so they won’t share load evenly. Charge each battery to full on its own before connecting them, and use equal-length cables. A shunt such as the one in my Victron SmartShunt wiring guide gives you an accurate state of charge for the whole bank.
Weight and size
Both fit a Group 31 battery box at 13 × 6.77 × 8.43 inches. LiTime lists 24.25 lb. Redodo’s spec table lists 22.05 lb, though its product copy says “only 25 lbs,” so plan on 22–25 lb. Either is far lighter than a lead-acid battery of similar usable capacity, which is a big reason people switch; my explainer on LiFePO4 vs lithium-ion covers the chemistry side.
Cost per usable kilowatt-hour
At the store prices I saw while writing, Redodo works out to about $0.19 per rated Wh and LiTime to about $0.26 per rated Wh. Spread over the claimed 4,000 cycles at 1,280Wh each, that’s about $0.047 and $0.066 per kWh delivered respectively (estimates that assume you actually reach 4,000 full cycles). Prices shift often with sales, so compare on the day you buy.
Who should buy which
| Your situation | Better fit | Why |
|---|---|---|
| First lithium battery on a budget | Redodo | Same core specs for less |
| Trolling motor where every pound counts | Redodo | Lighter by its spec table |
| Running a 1,000W inverter with motor loads | LiTime | 400A one-second surge |
| Expanding an existing LiTime bank | LiTime | Keep batteries matched |
| Expanding an existing Redodo bank | Redodo | Keep batteries matched |
FAQ
Is Redodo or LiTime better for a 12V 100Ah battery?
Their core specs match: 1,280Wh, 100A BMS, 4,000+ cycles and five-year warranties. Redodo costs less; LiTime lists a higher 400A one-second surge.
Can I mix a Redodo and a LiTime battery?
It’s not recommended. Different BMS designs and cell characteristics mean they won’t share current evenly in series or parallel.
What charger do I need?
A LiFePO4 charger at 14.2–14.6V. Both makers recommend 20A, which charges an empty battery in about five hours.
Can either battery start an engine?
No. Both makers say their standard 12V 100Ah models are for energy storage, not starting.
Can I charge them below freezing?
Not safely. Both list 32°F as the minimum charge temperature, and the standard models don’t list low-temperature charge protection. Look at each brand’s self-heating version for cold climates.
How long will a 12V 100Ah battery run a trolling motor?
About 3.8 hours at a 25A half-speed draw, or about 1.9 hours at 50A full speed (estimates).
What size inverter works with one 100Ah battery?
About 1,000W continuous. Both batteries are limited to 100A continuous, roughly 1,280W.
How much do they weigh?
LiTime lists 24.25 lb. Redodo lists 22.05 lb in its spec table and about 25 lb in its product description.
Bottom line
Redodo and LiTime build 12V 100Ah LiFePO4 batteries with the same capacity, BMS rating, footprint, waterproofing, cycle claim and warranty. Redodo is the better value at the prices I saw. LiTime earns its higher price with a stronger short surge rating and a slightly more conservative charge spec, and it’s the natural choice if you already run LiTime batteries, as I do.