On this page
The short answer on group 24 vs group 27 rv battery: both examples here are LiTime 12V 100Ah LiFePO4 batteries with Bluetooth and a 100A BMS, so the decision is about fit and count, not chemistry. Pick the Group 24 single if the tray is Group 24 size; pick the Group 27 two-pack for Group 27 trays when two matched batteries are wanted. The listings are tagged by group size, and each names the trays it fits, so start from the compartment in the RV and work outward. We compared the two listings on capacity, size, weight, protections, cycle claims and warranty to show where they differ.
SolarKitHQ earns a commission when you buy through links on this page, at no extra cost to you. As an Amazon Associate I earn from qualifying purchases. Affiliate disclosure.
Group 24 vs Group 27: side by side
| Group 24 vs Group 27 | LiTime 12V 100Ah Group 24 | LiTime 12V 100Ah Group 27 2-Pack |
|---|---|---|
| Capacity | 12.8V, 100Ah, 1280Wh | 12.8V, 100Ah, 1280Wh each |
| Case size | Group 24, 10.24 x 6.61 x 8.89 in | Group 27, 6.69 x 12.13 x 8.31 in |
| Weight | 21.9 lb | 22.9 lb each |
| Bluetooth | Bluetooth 5.0, LiTime app | Bluetooth 5.0, LiTime app |
| BMS | 100A, low-temp cutoff | 100A, low-temp cut-off |
| Cycle claim | Title says 15000, bullets say 4000+ | Title says 15000, bullets say 4000+ |
| Warranty | 5 years | 5 years |
Specifications are manufacturer rated as listed, collected 22 October 2026.
Size and weight
The Group 24 example measures 10.24 by 6.61 by 8.89 inches and weighs 21.9 pounds. The Group 27 example measures 6.69 by 12.13 by 8.31 inches and weighs 22.9 pounds per battery, and it comes as a two-pack, so plan space and mounting for two cases rather than one. Measure the tray before ordering: the Group 27 listing names Brinkley Z 2900, Four Winds 22E and Forest River Forester as fits, and says it drops into Group 27-31 trays with no modifications. The Group 24 listing pitches itself as a replacement that fits the existing compartment, calling itself 35% smaller than a standard Group 31 battery.
Protection and monitoring
Both listings state a 100A BMS and Bluetooth 5.0 monitoring through the LiTime app, so either one reports battery status and levels to a phone and can help avoid unexpected power loss outdoors. The Group 24 lists 20+ safeguards with a low-temperature cutoff that stops charging at freezing temperatures to protect the cells. The Group 27 lists 20+ protections including low-temp cut-off, over-charge and over-discharge protection and over-current protection, plus salt-spray and damp resistance and a 30-second overload recovery. Both carry an IP65 rating. Neither listing states a UL or ETL listing, so note that gap if a certification matters for the installation.
Capacity and expansion
Each battery in both listings is rated 12V 100Ah, and both listings give 1280Wh. The difference is how far the system can grow: the Group 24 listing supports 4P4S expansion up to 20.48kWh for larger off-grid or home backup setups, while the Group 27 listing allows up to 16 batteries for 20.48kWh of energy and 20.48kW of output. Since the Group 27 example arrives as a two-pack, a buyer starts at twice the capacity of the single Group 24 before adding anything. Match the expansion plan to the loads: the listings describe RV, camper, trolling motor, marine and home energy storage uses, so count what will draw power before choosing a count.
Cycle claims and warranty
Both titles claim 15000 cycles, but both bullet lists state 4000+ cycles, the Group 27 at 100% depth of discharge, so compare on the lower figure. The Group 24 bullets also mention a 10-year lifespan alongside the 4000+ deep cycles. Both list a 5-year warranty with technical support, and both mention AIG product liability coverage effective May 22, 2026. On paper the warranty terms are identical, which leaves fit and count as the deciding factors.
What the listings leave unclear
The Group 24 title’s 15000-cycle figure does not match its 4000+ deep cycle bullet, and the Group 27 title has the same gap between its 15000-cycle claim and 4000+ cycles at 100% depth of discharge. The Group 24 is described as 35% smaller than a standard Group 31 battery, a size neither example here uses, so that comparison does not help choose between these two. Neither listing details all 20+ BMS safeguards beyond the named protections, and neither gives a maximum continuous discharge figure beyond the 100A BMS rating. Treat unlisted figures as unknown rather than assuming they match.
Two examples
LiTime 12V 100Ah Group 27 2-Pack
A two-pack of Group 27 LiFePO4 batteries with Bluetooth monitoring, 100A BMS units and low-temperature protection, at 22.9 pounds each.
Pros
- Two 100Ah batteries in one order
- Bluetooth 5.0 with the LiTime app for real-time status
- 100A BMS with 20+ protections including low-temp cut-off
- 5-year warranty stated
Cons
- Title claims 15000 cycles; the bullets state 4000+ cycles at 100% DOD
- No UL or ETL listing is stated
- Not suitable for starting batteries, golf cart batteries, or jacks
- Two batteries to place and wire instead of one
Detailed Review
The listing states a two-pack of 12V 100Ah LiFePO4 batteries in Group 27 size, each 6.69 by 12.13 by 8.31 inches at 22.9 pounds, with Bluetooth 5.0, a 100A BMS with 20+ protections including low-temp cut-off and over-charge and over-discharge protection, an IP65 rating and 1280Wh per battery. It can expand to 16 batteries for 20.48kWh, and the warranty is 5 years. The title claims 15000 cycles while the bullets state 4000+ cycles at 100% depth of discharge, so use the lower figure.
Who it's for: RV owners with Group 27 trays who want two matched batteries with Bluetooth in one order. Who should skip it: anyone with a Group 24 compartment or who only needs a single battery.
Its Solar Score of 9.7/10 comes from performance 32/35, build 21/25, value 21/25, safety 8/10 and warranty 3/5: 85 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Capacity | 12.8V, 100Ah, 1280Wh each |
|---|---|
| Size | Group 27, 6.69 x 12.13 x 8.31 in |
| Weight | 22.9 lb each |
| BMS | 100A, low-temp cut-off |
Figures as published on the retailer listing, collected 22 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. 100A BMS with 20+ protections including low-temp cut-off, over-charge and over-discharge protection, IP65 rating 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.
LiTime 12V 100Ah Group 24
A Group 24 LiFePO4 battery with Bluetooth monitoring, a 100A BMS, low-temperature cutoff and a 5-year warranty, at 21.9 pounds.
Pros
- Bluetooth 5.0 monitoring through the LiTime app
- 100A BMS with 20+ safeguards and low-temperature charge cutoff
- 21.9 pounds; the listing calls it 63% lighter than AGM
- 5-year warranty and AIG product liability coverage stated
Cons
- Title claims 15000 cycles; the bullets state 4000+ deep cycles
- No UL or ETL listing is stated
- Not for starting engines, golf carts or jacks
- Single battery per order; the Group 27 example is a two-pack
Detailed Review
The listing states a 12V 100Ah LiFePO4 battery in Group 24 size, 10.24 by 6.61 by 8.89 inches at 21.9 pounds, with Bluetooth 5.0 monitoring, a 100A BMS offering 20+ safeguards, a low-temperature cutoff that stops charging at freezing temperatures, an IP65 rating and 1280Wh. It supports 4P4S expansion up to 20.48kWh, and the warranty is 5 years. The title claims 15000 cycles while the bullets state 4000+ deep cycles, so use the lower figure.
Who it's for: RV owners with a Group 24 tray who want a lighter battery with app monitoring and stated cold protection. Who should skip it: anyone who needs two batteries at once or a Group 27 case.
Its Solar Score of 9.7/10 comes from performance 30/35, build 21/25, value 20/25, safety 8/10 and warranty 3/5: 82 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Capacity | 12.8V, 100Ah, 1280Wh |
|---|---|
| Size | Group 24, 10.24 x 6.61 x 8.89 in |
| Weight | 21.9 lb |
| BMS | 100A, low-temp cutoff |
Figures as published on the retailer listing, collected 22 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. 100A BMS with 20+ safeguards, low-temperature charge cutoff, IP65 rating 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.
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 batteries state a 100A BMS with low-temperature cutoff and an IP65 rating. Both state a 5-year warranty. How we pick explains the weights.
| Product | Solar Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| LiTime 12V 100Ah Group 27 2-Pack | 9.7 | 32 | 21 | 21 | 8 | 3 |
| LiTime 12V 100Ah Group 24 | 9.7 | 30 | 21 | 20 | 8 | 3 |
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.
Group 24 vs group 27 rv battery: which should you choose?
Choose the Group 24 single for a Group 24 tray when one 100Ah battery with Bluetooth and a 5-year warranty covers the loads. The 21.9-pound weight and compact case suit smaller compartments, and the 4P4S expansion path leaves room to grow later. Choose the Group 27 two-pack for Group 27 trays when two matched 100Ah batteries in one order are wanted, also with Bluetooth and a 5-year warranty; starting with two batteries suits larger RV house banks from day one. If the chemistry itself is still undecided, our lithium vs lead acid battery for RV guide covers the tradeoffs, and group 24 vs group 31 RV battery compares another size step. For dry camping loads, see best RV battery for boondocking.
| If you need | Look at |
|---|---|
| A single Group 24 battery | LiTime 12V 100Ah Group 24, 21.9 lb |
| Two matched Group 27 batteries | LiTime 12V 100Ah Group 27 2-Pack |
| Phone monitoring | Either: both list Bluetooth 5.0 |
| Room to expand later | Group 24 to 20.48kWh, Group 27 to 20.48kWh |
| Longest stated warranty | Either: both list 5 years |
Sizing Notes
- Match the battery’s stated 12.8V LiFePO4 chemistry to every charging source: converter, solar controller and any DC to DC charger.
- Check the tray: the Group 24 example is 10.24 by 6.61 by 8.89 inches; the Group 27 example is 6.69 by 12.13 by 8.31 inches per battery, and it ships as two.
- Keep the continuous draw under the 100A BMS limit on each battery.
- Fuse the positive lead as the manual directs.
- Confirm the compartment fits the count: one case for the Group 24 single, two cases for the Group 27 two-pack.
Frequently Asked Questions
Will a Group 27 battery fit a Group 24 tray?
Compare the listed dimensions with the tray before ordering. The Group 24 example is 10.24 by 6.61 by 8.89 inches; the Group 27 example is 6.69 by 12.13 by 8.31 inches per battery. The Group 27 listing says it fits Group 27-31 trays, so a Group 24 tray is not among its stated fits.
How many cycles do these batteries last?
Both titles claim 15000 cycles, but both bullet lists state 4000+ cycles, the Group 27 at 100% depth of discharge. The Group 24 bullets also mention a 10-year lifespan. Use the lower cycle figure when comparing.
Do these batteries have Bluetooth?
Yes. Both list Bluetooth 5.0 monitoring through the LiTime app, for real-time battery status and levels. The Group 27 listing notes that charging with a lithium-activation or MPPT charger may be needed to activate Bluetooth after first receipt.
What warranty do they carry?
Both listings state a 5-year warranty with technical support. Both also mention AIG product liability coverage effective May 22, 2026.
Can I use them to start my RV engine?
No. Both listings say they are not for starting engines, and not for golf carts or jacks either. They are listed for RV house use, campers, trolling motors, marine use and home energy storage.
How far can each system expand?
The Group 24 listing supports 4P4S expansion up to 20.48kWh. The Group 27 listing allows up to 16 batteries for 20.48kWh of energy and 20.48kW of output.
Related guides
See every Deep Cycle and RV Batteries guide and all Batteries and Charging guides.
More picks: see 12V batteries for solar systems, battery boxes for RV and LiFePO4 vs gel batteries for RV.
