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The short answer on LiFePO4 vs AGM battery for RV use: a LiFePO4 battery weighs well under half as much for the same 12V 100Ah rating and states a built-in BMS, while an AGM battery asks less of your charger settings and, in Weize’s case, states charging down to 14°F. We compared two lithium and two AGM batteries on what each listing states: weight, protections, temperature limits, discharge figures and warranty terms. The lithium pair wins on weight and warranty; the AGM pair asks less of your charger settings, and Weize states charging down to 14°F.
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LiFePO4 vs AGM: side by side
| LiFePO4 vs AGM | LiTime 12V 100Ah Group 31 | ECO-WORTHY 12V 100Ah Bluetooth | Renogy 12V 100Ah AGM | Weize 12V 100Ah AGM | Amazon |
|---|---|---|---|---|---|
| Chemistry | LiFePO4 | LiFePO4 | AGM lead acid | AGM lead acid | |
| Weight | 22.16 lb | 23.15 lb | 63.9 lb | 57 lb | |
| Protection stated | 100A BMS, low temp cutoff | 100A BMS, low temp protection | Not stated | Not stated | |
| Cold limits stated | No charging below 32°F | Low temp protection, no figure | Discharge -4 to 140°F | Charge from 14°F | |
| Monitoring | None | Bluetooth 5.1 | None | None | |
| Warranty | 5 years | 3 years | 2 years, prorated | 1 year |
Specifications are manufacturer rated as listed, collected 19 October 2026.
Weight and size
This is the clearest gap. The LiTime and ECO-WORTHY lithium batteries are listed at 22.16 and 23.15 pounds, while the Renogy and Weize AGM batteries are listed at 63.9 and 57 pounds for the same 12V 100Ah rating. Case sizes are close: the LiTime is a Group 31 case, the ECO-WORTHY a Group 24 case, and the AGM listings give 13.1 by 6.9 by 8.6 inches (Renogy) and 12.99 by 6.73 by 8.43 inches (Weize).
Protection and monitoring
Both lithium listings state a 100A battery management system, and LiTime lists protection against overcharge, overheat and short circuits. The ECO-WORTHY adds Bluetooth 5.1, so you can read voltage, current and remaining capacity on a phone. Neither AGM listing names a protection feature, which is normal for the chemistry but means the safety line of the score is empty.
Cold weather
Cold charging is where these listings differ most. LiTime states that its BMS stops charging below 32°F and stops discharging below -4°F. ECO-WORTHY states low temperature protection without a figure. On the AGM side, Weize states charging from 14°F and Renogy states discharge performance down to -4°F. If your RV sits in a cold climate with the battery outside the heated space, that difference matters more than any cycle claim.
What the listings leave unclear
LiTime’s title claims up to 15000 cycles while its bullets state 4000+ cycles at 100% depth of discharge, so compare on the lower figure. Renogy’s spec table lists 8.8 pounds next to the 63.9 pound battery weight. Weize gives 1150A in the title and 1100A for 5 seconds in the bullets. None of the four states a UL listing.
Four examples
| # | Product | Solar Score | Buy |
|---|---|---|---|
| 1 |  LiTime 12V 100Ah Group 31 | 9.8/10 | Buy on Amazon |
| 2 |  ECO-WORTHY 12V 100Ah Bluetooth | 9.7/10 | Buy on Amazon |
| 3 |  Renogy 12V 100Ah AGM | 9.6/10 | Buy on Amazon |
| 4 |  Weize 12V 100Ah AGM | 9.5/10 | Buy on Amazon |
LiTime 12V 100Ah Group 31
A Group 31 LiFePO4 battery with a 100A BMS, a low temperature charge cutoff, an IP65 rating and a 5-year warranty.
Pros
- Stops charging below 32°F and discharging below -4°F, per the listing
- BMS protection against overcharge, overheat and short circuits stated
- 22.16 pounds in a Group 31 size
- 5-year warranty stated
Cons
- No Bluetooth on this version
- Cycle figures range from 4000 to 15000 depending on the line you read
- Title targets trolling motors more than RVs
- 100A BMS limits continuous draw
Detailed Review
The listing states a 12V 100Ah LiFePO4 battery in Group 31 size at 22.16 pounds, a 100A BMS with protection against overcharge, overheat and short circuits, an IP65 rating, ABYC E-13 compliance and a low temperature cutoff that stops charging below 32°F and discharging below -4°F. It can expand to 4P4S, and the warranty description is 5 years. The title claims 15000 cycles while the bullets state 4000+ cycles at 100% depth of discharge, so use the lower figure when you compare.
Who it's for: RV owners who want a lighter house battery with stated cold protection and the longest warranty here. Who should skip it: anyone who wants app monitoring built in.
Its Solar Score of 9.8/10 comes from performance 33/35, build 24/25, value 21/25, safety 8/10 and warranty 3/5: 89 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Capacity | 12.8V, 100Ah, 1280Wh |
|---|---|
| Size | Group 31, 13 x 6.77 x 8.5 in |
| BMS | 100A |
| Cold cutoff | Charging stops below 32°F |
Figures as published on the retailer listing, collected 19 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. 100A BMS with overcharge, overheat and short circuit protection, low temperature cutoff, IP65 and ABYC E-13 stated, so safety scores 8 of 10. 5 Year Warranty stated. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 3 of 5. See How We Pick.
Battery safety. Charge with a charger and settings that match the stated chemistry, fuse the positive lead as the manual directs, cover terminals, keep within the stated temperature range, and never charge a damaged battery.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
ECO-WORTHY 12V 100Ah Bluetooth
A Group 24 LiFePO4 battery with Bluetooth 5.1 monitoring, a 100A BMS and low temperature protection.
Pros
- Bluetooth 5.1 shows voltage, current and capacity on your phone
- Low temperature protection and a 100A BMS stated
- Group 24 size, 10.23 by 6.6 by 8.43 inches
- 3-year warranty stated
Cons
- No low temperature cutoff figure is given
- Shorter warranty than the LiTime
- Smaller Group 24 case may not fill a Group 31 tray
- 100A BMS limits continuous draw
Detailed Review
The listing states a 12.8V 100Ah LiFePO4 battery with 1280Wh, Bluetooth 5.1 monitoring of voltage, current and capacity, a built-in 100A BMS, low temperature protection and a Group 24 case of 10.23 by 6.6 by 8.43 inches at 23.15 pounds. It is pitched as a drop-in replacement for Group 24 lead acid and AGM batteries, and the warranty is 3 years. The listing names low temperature protection but gives no cutoff temperature.
Who it's for: RV owners replacing a Group 24 lead acid battery who want to watch charge level from a phone. Who should skip it: owners with a Group 31 tray who want a snug fit.
Its Solar Score of 9.7/10 comes from performance 33/35, build 22/25, value 22/25, safety 6/10 and warranty 2/5: 85 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Capacity | 12.8V, 100Ah, 1280Wh |
|---|---|
| Size | Group 24, 10.23 x 6.6 x 8.43 in |
| Monitoring | Bluetooth 5.1 |
| BMS | 100A |
Figures as published on the retailer listing, collected 19 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. Built-in 100A BMS and low temperature protection stated, so safety scores 6 of 10. 3-year warranty stated. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 2 of 5. See How We Pick.
Battery safety. Charge with a charger and settings that match the stated chemistry, fuse the positive lead as the manual directs, cover terminals, keep within the stated temperature range, and never charge a damaged battery.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
Renogy 12V 100Ah AGM
A sealed deep cycle AGM battery with a stated 3% self-discharge rate, 1100A maximum discharge and a -4 to 140°F discharge range.
Pros
- Discharge range of -4 to 140°F stated
- Supports series connections and up to 4 in parallel
- 3% self-discharge rate stated
- Sealed, maintenance-free design
Cons
- 63.9 pounds stated
- 2-year prorated warranty
- No protection features are listed
- Spec table also lists 8.8 pounds, which conflicts
Detailed Review
The listing states a 12V 100Ah sealed AGM deep cycle battery with a 3% self-discharge rate, a 1100A maximum discharge current, discharge performance from -4 to 140°F, unlimited series connections and up to four in parallel. The battery weight is 63.9 pounds, while the spec table also lists an item weight of 8.8 pounds, which cannot describe this battery. The warranty is a 2-year prorated material and workmanship warranty.
Who it's for: RV owners who keep a charger and controller set for lead acid and want a familiar sealed battery. Who should skip it: anyone watching weight on the tongue or in a van.
Its Solar Score of 9.6/10 comes from performance 29/35, build 22/25, value 22/25, safety 0/10 and warranty 1/5: 74 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Capacity | 12V, 100Ah |
|---|---|
| Size | 13.1 x 6.9 x 8.6 in |
| Weight | 63.9 lb |
| Discharge range | -4 to 140°F |
Figures as published on the retailer listing, collected 19 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. No battery management system, protection or listing is stated, so safety scores zero. 2-year prorated material and workmanship warranty stated. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 1 of 5. See How We Pick.
Battery safety. Charge with a charger and settings that match the stated chemistry, fuse the positive lead as the manual directs, cover terminals, keep within the stated temperature range, and never charge a damaged battery.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
Weize 12V 100Ah AGM
A maintenance-free AGM deep cycle battery with stated charge and discharge temperature ranges and a 1-year warranty.
Pros
- Charge range of 14°F to 122°F and discharge range of 5°F to 122°F stated
- Self-discharge of 1 to 3% per month stated
- Terminal polarity layout given
- Maintenance-free AGM construction
Cons
- 57 pounds stated
- 1-year warranty
- Title says 1150A max discharge, the bullets say 1100A for 5 seconds
- No protection features are listed
Detailed Review
The listing states a 12V 100Ah sealed AGM battery, 12.99 by 6.73 by 8.43 inches and 57 pounds, a charging range of 14°F to 122°F and a discharging range of 5°F to 122°F, self-discharge of 1 to 3% per month and a 1-year warranty. The title gives 1150A maximum discharge current while the bullets give 1100A for 5 seconds; the two figures do not match.
Who it's for: RV owners who want a lead acid house battery with clearly stated temperature ranges. Who should skip it: owners who want more than a 1-year warranty.
Its Solar Score of 9.5/10 comes from performance 28/35, build 22/25, value 22/25, safety 0/10 and warranty 1/5: 73 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Capacity | 12V, 100Ah |
|---|---|
| Size | 12.99 x 6.73 x 8.43 in |
| Weight | 57 lb |
| Charge range | 14°F to 122°F |
Figures as published on the retailer listing, collected 19 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. No battery management system, protection or listing is stated, so safety scores zero. 1 Year Warranty stated. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 1 of 5. See How We Pick.
Battery safety. Charge with a charger and settings that match the stated chemistry, fuse the positive lead as the manual directs, cover terminals, keep within the stated temperature range, and never charge a damaged battery.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
As an Amazon Associate I earn from qualifying purchases.
How we scored them
The Solar Score weighs performance, build, value, safety and warranty. For RV house batteries, safety means a battery management system, cold charge protection or another protection the listing names; both lithium batteries state these, and neither AGM battery does. All four state a warranty term, from 1 year to 5 years. How we pick explains the weights.
| Product | Solar Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| LiTime 12V 100Ah Group 31 | 9.8 | 33 | 24 | 21 | 8 | 3 |
| ECO-WORTHY 12V 100Ah Bluetooth | 9.7 | 33 | 22 | 22 | 6 | 2 |
| Renogy 12V 100Ah AGM | 9.6 | 29 | 22 | 22 | 0 | 1 |
| Weize 12V 100Ah AGM | 9.5 | 28 | 22 | 22 | 0 | 1 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.
LiFePO4 vs AGM battery for RV: which should you choose?
Choose LiFePO4 if weight matters, if you want a longer stated warranty, and if your charger, solar controller and converter have a lithium setting. The LiTime suits a Group 31 tray and cold-weather owners because it states its cutoff temperatures; the ECO-WORTHY suits a Group 24 tray and owners who want Bluetooth. Choose AGM if your charging equipment is set for lead acid and you want to keep it, or if you need to charge below freezing: Weize states charging from 14°F.
| If you need | Look at |
|---|---|
| Lowest weight | LiTime 12V 100Ah Group 31, 22.16 lb |
| Phone monitoring | ECO-WORTHY 12V 100Ah Bluetooth |
| Lead acid charger settings | Renogy or Weize AGM |
| Longest stated warranty | LiTime, 5 years |
Sizing Notes
- Match the battery’s stated voltage and chemistry to every charging source: converter, solar controller and any DC to DC charger.
- Check the tray: the LiTime is Group 31, the ECO-WORTHY Group 24.
- Keep your total draw under the 100A BMS limit on the lithium batteries.
- Fuse the positive lead as the manual directs, and leave changes to the RV’s 120V system to a qualified technician.
Frequently Asked Questions
Is LiFePO4 lighter than AGM for the same rating?
Yes. In this group, the 12V 100Ah lithium batteries are listed at 22.16 and 23.15 pounds, and the AGM batteries at 57 and 63.9 pounds.
Can a LiFePO4 battery be charged below freezing?
Check the listing. LiTime states charging stops below 32°F, and ECO-WORTHY states low temperature protection without giving a figure. Weize, an AGM battery, states charging from 14°F.
Which battery here has the longest warranty?
The LiTime at 5 years, then ECO-WORTHY at 3 years, Renogy at 2 years prorated and Weize at 1 year.
Do I need a different charger for LiFePO4?
Your charger and solar controller need a lithium or LiFePO4 setting. Check every charging source in your RV before switching from AGM.
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