Sealed lead-acid still wins in the cold · review
A 12 V 100 Ah AGM deep-cycle battery that discharges from -4 to 140 °F, with a 1,100 A five-second peak and low self-discharge, sold by Amazon at $208.99.
Renogy’s 12 V 100 Ah AGM battery is a sealed lead-acid design. Its strongest argument against LiFePO4 is temperature: Renogy says the upgraded electrolyte discharges from -4 to 140 °F. LiFePO4 batteries generally must not be charged below freezing, and several on this site stop entirely.
A 1,100 A maximum discharge for five seconds is the highest short-term figure on this shelf. It is what starts a motor or an inverter-driven compressor without dropping out.
It weighs 63.9 lb at 13.1 × 6.9 × 8.6 in. A 100 Ah LiFePO4 battery in the same size weighs about 22 lb.
Renogy allows unlimited series connection and up to four in parallel. Self-discharge is under 3% a month at 77 °F, which suits seasonal use.
Amazon.com was selling it at $208.99 on November 2, 2026, with a two-year prorated warranty.
Prices quoted in this text were read on November 2, 2026. The live price is at the top of the page.
| Capacity | 12 V, 100 Ah |
|---|---|
| Chemistry | Sealed lead-acid, AGM |
| Maximum discharge | 1,100 A for 5 seconds |
| Operating range | Discharge from -4 to 140 °F |
| Self-discharge | Under 3% per month at 77 °F |
| Banking | Series without limit, parallel up to 4 |
| Size | 13.1 × 6.9 × 8.6 in |
| Weight | 63.9 lb |
| Warranty | 2 years, prorated |
| Amazon reference | B075RFXHYK |
Renogy does not state a recommended depth of discharge in the bullets. AGM batteries generally last longest when they are not drained deeply; UPLUS, on this shelf, recommends no more than 80% for its lead-carbon battery and says ordinary AGM should stay at 50%.
Renogy lists a fridge, a microwave, a CPAP and a coffee maker, through an inverter. The 1,100 A five-second peak covers starting surges; a long microwave run will pull the voltage down quickly.
Self-discharge is under 3% a month at 77 °F, so it holds a charge through a season, but a lead-acid battery should still be topped up.
8.0/ 10
A sealed AGM battery that works where lithium will not, at -4 °F, with a strong surge figure. Heavy, and with a short prorated warranty.
Same category, nearby prices, between portable power units. What remains is the specifications every one publishes — half empty, a column is no use.
| Model | Price | Capacity | Chemistry | Size | Weight |
|---|---|---|---|---|---|
| Renogy 12 V 100 Ah AGM | $209 | 12 V, 100 Ah | Sealed lead-acid, AGM | 13.1 × 6.9 × 8.6 in | 63.9 lb |
| UPG UB121000 Group 30H | $197 | 12 V, 100 Ah | Sealed lead-acid, AGM, valve regulated | Group 30H, 12.17 × 6.61 × 9.16 in | 60 lb |
| UPLUS LDC12-100M Group 27 | $171 | 12 V, 100 Ah (10-hour rate) | Lead-carbon AGM with gel electrolyte | Group 27, 12.05 × 6.61 × 8.19 in | 60 lb |
| Mighty Max ML100-12 Group 27 | $170 | 12 V, 100 Ah | Sealed lead-acid, AGM, valve regulated | 12.09 × 6.65 × 8.48 in; Group 27 per the bullets | Listed as 28 lb |
Cold-climate RVs and cabins, and anyone who wants a sealed battery without a BMS
Specifications: the manufacturer sheet for portable power gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
12 V 100 Ah sealed lead-acid AGM battery, Group 27 per the listing, UL certified, 12.09 × 6.65 × 8.48 in, mounts in any position, battery and screws only, 1-year warranty
A UL-certified 12 V 100 Ah sealed AGM battery that mounts in any position, sold by Amazon at $169.99, the cheapest lead-acid option here.
Best for: Solar and backup banks where price matters more than weight or warranty
≈ $170
12 V 100 Ah sealed lead-acid AGM battery, Group 30H, UL recognized, 12.17 × 6.61 × 9.16 in, 60 lb, mounts upside down, float and cyclic use, 1-year warranty
A UL-recognized 12 V 100 Ah Group 30H AGM battery from a US company, mountable upside down, at 60 lb and $197.15. Mind its mixed-up wiring advice.
Best for: Backup and solar banks where a known US brand and support matter
≈ $197
12 V 100 Ah lead-carbon AGM / gel hybrid deep-cycle battery, Group 27 (12.05 × 6.61 × 8.19 in), 80% recommended depth of discharge, 25 A maximum charge (full in 5 hours), 45 A continuous, 710 A (5 s), 60 lb, 2-year warranty
A 12 V 100 Ah lead-carbon AGM battery rated for 80% depth of discharge, with charging and discharge limits in amps, at 60 lb and $171.46.
Best for: Solar and RV banks where you want lead-acid but need to use most of the capacity
≈ $171
