Sealed lead-acid still wins in the cold · review
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.
UPLUS rates its LDC12-100M for an 80% depth of discharge and says that does not shorten its cycle life, where it puts ordinary AGM batteries at a 50% limit. If that holds, 80 Ah of the 100 Ah is usable, against about 50 Ah from a conventional AGM battery.
The listing gives the charge limit, 0.25C or 25 A, which fills it in about five hours, and the discharge limits, 45 A continuous and 710 A for five seconds. Few lead-acid listings publish both. At 45 A, continuous output is about 540 W at 12 V, which suits a small inverter, a fridge and lights.
Discharge works from -4 to 131 °F. Self-discharge is under 3% a month.
Group 27, 12.05 × 6.61 × 8.19 in, 60 lb. UPLUS gives a two-year warranty and says it has offices and warehouses in California and Georgia.
UPLUS NEW TECH listed it at $171.46 on November 2, 2026.
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 (10-hour rate) |
|---|---|
| Chemistry | Lead-carbon AGM with gel electrolyte |
| Depth of discharge | 80% recommended maximum |
| Charging | 0.25C maximum: 25 A, full in about 5 hours |
| Discharge | 45 A continuous, 710 A for 5 seconds |
| Operating range | Discharge from -4 to 131 °F |
| Self-discharge | Under 3% per month |
| Size | Group 27, 12.05 × 6.61 × 8.19 in |
| Weight | 60 lb |
| Warranty | 2 years; offices in California and Georgia |
| Amazon reference | B0FF4QJMNR |
UPLUS describes thick absorbent glass mat separators with superior lead-carbon AGM chemistry and a gel electrolyte. It claims a service life twice that of ordinary AGM and an 80% usable depth of discharge.
UPLUS says to charge at 0.25C at most: a 12 V, 25 A AGM charger for this 100 Ah battery, which fills it in about five hours.
45 A continuous, about 540 W at 12 V, and 710 A for five seconds.
8.0/ 10
A lead-carbon AGM battery that can be drained to 80% and publishes its charge and discharge limits. Good engineering data; modest continuous current.
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 |
|---|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
Solar and RV banks where you want lead-acid but need to use most of the capacity
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 AGM deep-cycle battery, 13.1 × 6.9 × 8.6 in, 63.9 lb, 1,100 A (5 s) maximum discharge, discharge from -4 to 140 °F, under 3% monthly self-discharge, unlimited series and up to 4P parallel, 2-year prorated warranty
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.
Best for: Cold-climate RVs and cabins, and anyone who wants a sealed battery without a BMS
≈ $209
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
