12V (12.8 V nominal) 300 Ah self-heating LiFePO4 battery, 27.5 kg, the largest capacity indexed here. 200 A continuous charge and discharge, a 390 A 5-second surge, 5,000 cycles at 80% depth of discharge, IP65, and self-heating that allows charging down to -20 C.
brand: Renogyfamily: Corecapacity: 12V 300 Ahconfidence: highupdated: Aug 15, 2026
A battery is a component, not a power supply. Rated capacity is measured at a stated discharge rate and temperature (shown below where the manufacturer publishes it). Real usable energy is lower and depends on the depth of discharge you run the pack to, the load, the temperature and the inverter it feeds. This index publishes rated figures only and derives no single "real usable watt-hours" number. On its own a bare
battery has no inverter, no charge controller and no AC outlet: it stores energy for a system you
build around it, and its safe charge and discharge limits (in the specifications below) are part of
that system design.
Manufacturer product image, from Renogy.
Shown for identification only; specifications come from the sources listed below.
This is Renogy's Core Series 12V 300Ah lithium iron phosphate battery, the largest single battery indexed here and the self-heating member of the Core line. It is rated 300 Ah at 0.5C and 25 C, at a 12.8 V nominal, in a 27.5 kg case. Its 200 A battery management system holds continuous charge and discharge to 200 A each and allows a 390 A surge for 5 seconds, and Renogy rates it for 5,000 cycles at 80% depth of discharge. A self-heating function lets it accept charge down to -20 C, where a non-heated LiFePO4 pack must refuse charge below freezing. It is IP65 rated with M8 terminals torqued to 10 to 12 N m, expands to 4S4P, and carries a 5-year prorated material and workmanship warranty. Renogy publishes no watt-hour figure for a single battery, only bank totals in the manual's wiring diagrams, so no energy rating is recorded here.
Variant note: Core Series 12V 300Ah self-heating (SKU RBT12300LFPSH-US). This is the ONLY Core Series 300Ah on Renogy's US site: a sweep of the 300 Ah listings found just this SKU and the Core Mini 300Ah with low-temperature protection (RBT12300LFP-M-US), which is a different family and case. Distinct also from the 12 V Core 50Ah, 100Ah Core Mini and 200Ah Bluetooth Core indexed here, and from the 24 V Core LT.
Data note: Figures taken from Renogy's official user manual (VERSION B0, dated 2024-12-10) and the rendered product spec table on 2026-08-15 (SKU RBT12300LFPSH-US). METHOD NOTE worth reusing: Renogy's on-page spec tab is JS-hydrated and EMPTY in raw HTML, so a plain curl fetch returns a false 'unpublished' verdict on nearly every field. The manual PDF is the reliable source for this brand's larger batteries. capacityWh is null: Renogy states no single-battery energy figure anywhere; the manual's wiring diagrams give bank totals only (for example a 2P bank at 600 Ah and 7,680 Wh), and dividing that down would be computation rather than a sourced claim. usableDoDPercent is null: a 100% DoD claim appears only in introductory marketing prose, while the rated cycle life is quoted at 80% DoD, the same treatment applied to the other records here. bciGroupSize is null: the manual claims the battery has a 'standard Battery Council International (BCI) group size' but never names it, and inferring one from the case dimensions would be a guess. bmsRatingA of 200 A comes from FAQ prose rather than a spec row, which is why it is the softest field in the record. TWO CONFLICTS PRESERVED, not resolved: (1) self-heating element power is given as 90 W in the manual and 200 W on the product page, likely a hardware revision since the manual is VERSION B0; selfHeating is recorded true and both figures are cited here rather than either being published as the value. (2) the parallel limit is given as 4S4P in the spec row and FAQ, while a manual wiring diagram shows an 8-battery parallel bank at 2,400 Ah; maxInParallel records the spec-row value of 4 and the diagram is noted here.
Specifications
Chemistry, nominal voltage, rated capacity and weight come from official manufacturer sources;
the exact claims and links are in the provenance table. Peak
(surge) discharge is always shown with the seconds it is rated for and is never presented as the
continuous rating, and any cycle-life figure is shown with the depth of discharge it is quoted
at. Figures the manufacturer does not publish are left blank rather than estimated.
Chemistry & capacity
Attribute
Value
Chemistry
LiFePO4 (lithium iron phosphate)
Nominal voltage
12V nominal (12.8 V)
Rated capacity
300 Ah
Rated energy
Not stated by the manufacturer (300 Ah × 12.8 V works out to about 3,840 Wh, but this index only publishes a figure the manufacturer states)
Capacity rating basis
0.5C, 25 C
Power envelope (BMS)
Attribute
Value
Battery management system
Yes, 200 A BMS
Max continuous discharge
200 A
Peak (surge) discharge
390 A for 5 s (a brief surge, not a continuous rating)
Max continuous charge
200 A
Cycle life
Attribute
Value
Rated cycle life
5,000 cycles at 80% depth of discharge
Cycle-life test conditions
5,000 cycles measured at 0.5C/1C and 25 C, at 80% depth of discharge
Temperature
Attribute
Value
Charge temperature range
-20 °C to 55 °C (-4 °F to 131 °F)
Discharge temperature range
-20 °C to 60 °C (-4 °F to 140 °F)
Storage temperature range
-25 °C to 65 °C (-13 °F to 149 °F)
Low-temperature charge cutoff
Yes, BMS blocks charging below freezing
Self-heating function
Yes
Physical & fitment
Attribute
Value
Weight
27.5 kg (60.6 lb)
Dimensions (L × W × H)
522 × 240 × 219 mm
Terminal type
M8 x 1.25 x 15 mm
Terminal torque
10 N m to 12 N m (88.5 to 106.2 inch-lbs)
Ingress protection
IP65
Bank building
Attribute
Value
Series / parallel support
Series and parallel, up to 4S4P
Max units in series
4
Max units in parallel
4
Connectivity & compatibility
Attribute
Value
Bluetooth monitoring
No
Model & availability
Attribute
Value
Warranty
5 years
Release status
Current
Market region
US
Use cases
Large 12 V house banks where one 300 Ah battery replaces three 100 Ah units and their interconnects
Systems with a large inverter, where the 200 A continuous discharge supports heavier loads than a 100 Ah pack
Strengths and weaknesses
Strengths
Largest capacity in this index at 300 Ah, in a single case rather than a multi-battery bank
200 A continuous both ways, double the ceiling of the 100 Ah packs here
Self-heating allows charging down to -20 C rather than stopping at 0 C
5,000 cycles published with its 80% depth-of-discharge basis and a stated 0.5C, 25 C test condition
Published terminal torque, IP65, and a full manual PDF as a source
Weaknesses
27.5 kg in a 522 mm case: a two-person lift needing a purpose-built tray, and no BCI group size is published despite the manual claiming a standard one
Renogy publishes no watt-hour figure for a single battery, so no energy rating can be recorded
Self-heating element power is contradicted on Renogy's own sources (90 W in the manual, 200 W on the product page)
The parallel limit is contradicted too: the spec row says 4S4P while a manual wiring diagram shows an 8-battery parallel bank
No charge controller or inverter included: it is a storage component, not a power supply
Where to buy
Retail offers — a commerce layer, not a source for any specification on this page.
No current price is tracked for this product; check the merchant for pricing.
Core specifications come from official manufacturer sources only, with the exact claim text
preserved per field. Spec sheets and manuals outrank marketing copy. See the
methodology for the full policy.
Official manual (PDF) — Recorded with its 5-second duration. This row appears only in the manual; the on-page spec table omits peak discharge entirely.
Equipped with a 90W self-heating function to ensure battery charging at low temperature.
Official manual (PDF) — The presence of self-heating is unambiguous; its power rating is contested (manual 90 W, product page 200 W) and neither figure is published as a stored value.
high
chargeTempRangeC
[-20,55]
Charge Temperature Range: -4F~131F (-20C~55C)
Official spec page — Sub-zero charging is possible only because of the self-heating function.
high
weightKg
27.5
Weight: 60.63 lbs. / 27.5 kg
Official manual (PDF) — Published in kilograms directly; the manual and product page agree.
high
dimensionsMm
[522,240,219]
Dimension: 20.55 x 9.45 x 8.62 in / 522 x 240 x 219 mm
Official manual (PDF) — Published in millimetres directly; manual and product page agree.
