Battery Building ToolsCell Database APR18650M1A

✱ Render

18.3 × 65 mm · 39 g

18650LFP Mooch-tested · 30 A

A123Systems APR18650M1A

Name: A123Systems APR18650M1A Lithium Battery Cell
Brand: A123Systems

A123Systems

Capacity1100 mAh3.63 Wh · 93.08 Wh/kg

Mooch continuous30 ASize to this figure

Resistance12 mΩDC internal resistance

Voltage window3.3 V2 – 3.6 V

Standard charge1500 mA~0.7 h to full

Build a pack with this cell →Download spec sheet (PDF)Open the datasheet Mooch's test ↗

At 1100 mAh, this ranks #167 of 169 18650 cells in our database. On the lower end for capacity among 18650 cells. Higher discharge than 98% of 18650 cells in our database. Great for high-drain builds.

Full specifications

Electrical
Chemistry	LFP
Nominal voltage	3.3 V
Max charge voltage	3.6 V
Discharge cutoff	2 V
Max continuous discharge	30A (Mooch-tested)
Mooch CDR (trusted)	30 A
Standard charge current	1500 mA
Standard discharge current	5000mA
Internal resistance	12 mΩ
Physical
Form factor	18650
Dimensions	18.3mm × 65mm
Weight	39 g
Top type	Flat Top
Protected	No
Wrap color	Yellow
Insulator ring	White
Performance
Capacity	1100 mAh
Energy	3.63 Wh
Specific energy	93.08 Wh/kg
Energy density	212.33 Wh/L
Power density (gravimetric)	2,538 W/kg
Power density (volumetric)	5,791 W/L
Cycle life	1000 cycles
Operating Limits
Discharge temp	-30°C to 60°C

Independent test data: Mooch's test of the APR18650M1A ↗

At the standard 1500 mA charge rate, a full charge takes about 0.7 hours. The last bit is a slow taper to top it off.

Voltage operating window

Cutoff
2VNominal
3.3VMax charge
3.6V

Usable range: 1.6V

C-rate conversion: A123Systems APR18650M1A (1100mAh)

C-Rate	Current (A)	Theoretical runtime
0.2C	0.22 A	5h 00m
0.5C	0.55 A	2h 00m
1C	1.1 A	1h 00m
2C	2.2 A	30m
3C	3.3 A	20m
5C	5.5 A	12m
8C	8.8 A	7m 30s
10C	11 A	6m
15C	16.5 A	4m
20C	22 A	3m
25C	27.5 A	2m 24s

Highlighted row is closest to the rated 30A continuous discharge.

Charging

Rate	Current	Estimated time
0.5C	550 mA	~2h 00m
1C	1,100 mA	~1h 00m
Standard	1,500 mA	~0h 44m

These are estimates for the constant-current phase. Real charge time is a bit longer because of the slow taper at the end.

Datasheet

Download official A123Systems APR18650M1A datasheet (PDF) ↗

Pack scaling

Series voltage configurations

Config	Nominal V	Max V	Min V	Common use
4S	13.2V	14.4V	8V	12V system (LiFePO4)
8S	26.4V	28.8V	16V	24V system
12S	39.6V	43.2V	24V	36V system
16S	52.8V	57.6V	32V	48V powerwall / ebike

Parallel capacity scaling

Config	Capacity	Energy	Max discharge
1P	1,100 mAh	3.6 Wh	30 A
2P	2,200 mAh	7.3 Wh	60 A
3P	3,300 mAh	10.9 Wh	90 A
4P	4,400 mAh	14.5 Wh	120 A
5P	5,500 mAh	18.2 Wh	150 A
6P	6,600 mAh	21.8 Wh	180 A

Example pack configurations

4S1P

12V system

4 cells13.2V nominal1,100mAh15Wh30A maxCell weight: 0.16 kg (add ~15% for wiring and BMS)

4S2P

12V with more capacity

8 cells13.2V nominal2,200mAh29Wh60A maxCell weight: 0.31 kg (add ~15% for wiring and BMS)

8S1P

24V system

8 cells26.4V nominal1,100mAh29Wh30A maxCell weight: 0.31 kg (add ~15% for wiring and BMS)

16S1P

Powerwall / 48V ebike

16 cells52.8V nominal1,100mAh58Wh30A maxCell weight: 0.62 kg (add ~15% for wiring and BMS)

Design a custom pack with this cell:

Pack Planner →Pack Designer →

Application suitability

PowerwallsToo low capacity for practical powerwall use. You'd need too many cells.

Ebike PacksNot enough discharge for ebike use. Voltage sag would be a problem under load.

Car AudioEnough discharge to handle amplifier bursts without voltage sag.

High-Drain VapingAbove the 25A Mooch CDR threshold. Suitable for regulated and mechanical mods.

FlashlightsLower capacity means shorter runtime. Better cells are available for flashlight use.

Power ToolsMay work for lighter-duty tools. Check your tool's current requirements.

Physical dimensions

Dimensions18.3mm × 65mm

TopFlat Top

Format18650

Similar cells

Same format and chemistry, within ±500mAh capacity:

Cell	mAh	CDR	Wh	Weight	Wh/kg
A123Systems APR18650M1A (this cell)	1100	30A	3.63	39g	93.08
Lishen (LS) IFR-18650EC	1500	5A	4.8	42g	114
Sony US18650FT	1100	10A	3.5	38.8g	91

Build with this cell

Pack PlannerSize your pack. Voltage, capacity, runtime, BMS.Pack Designer2D & 3D layout for your exact cell arrangement Pack BuilderBalance cells by capacity and internal resistance

Frequently asked questions

What is the capacity of the A123Systems APR18650M1A?

What is the maximum discharge rate of the A123Systems APR18650M1A?

What does the A123Systems APR18650M1A weigh?

Can I use the APR18650M1A for vaping?

What is the cycle life of the A123Systems APR18650M1A?

What size is the A123Systems APR18650M1A?

Handling and safety

Lithium cells can be dangerous if mishandled. A few things to keep in mind:

Never charge above 3.6V or discharge below 2V.
Store cells at around 3.6-3.8V (roughly 40-60% charge) for long-term storage.
Don't mix cells with different capacities, chemistries, or states of charge in a pack.
Inspect wraps before use. A torn wrap can cause a short circuit.
Always use a BMS or balance charger appropriate for your pack configuration.
Keep cells away from metal objects, keys, and coins. A short across the terminals can cause fire.

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Specs come from manufacturer datasheets and independent testing; Mooch-tested discharge ratings are shown when available because they reflect real continuous performance better than headline datasheet numbers. Browse the full 18650 & 21700 cell database to compare every cell.

Disclaimer: We do our best to keep the information on this page accurate, but we cannot guarantee that all specifications are correct or up to date. Cell characteristics can vary between production batches and may change over time. Do not rely solely on this data for safety-critical applications. Always verify against the manufacturer's official datasheet before use.