Battery Building ToolsCell Database 40A 2600mAh

✱ Render

18.2 × 65.05 mm

18650LMO Mooch-tested · 40 A

AWT 40A 2600mAh

Name: AWT 40A 2600mAh Lithium Battery Cell
Brand: AWT

AWT · released 2015

Capacity2600 mAh9.36 Wh

Mooch continuous40 ASize to this figure

Voltage window3.6 V2.5 – 4.2 V

Standard charge1250 mA~2.1 h to full

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

At 2600 mAh, this ranks #96 of 279 18650 cells in our database. Mid-range for capacity among 18650 cells. Higher discharge than 98% of 18650 cells in our database. Great for high-drain builds.

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Full specifications

Electrical
Chemistry	LMO
Nominal voltage	3.6 V
Max charge voltage	4.2 V
Discharge cutoff	2.5 V
Max continuous discharge	40A (Mooch-tested)
Mooch CDR (trusted)	40 A
Standard charge current	1250 mA
Physical
Form factor	18650
Dimensions	18.2mm × 65.05mm
Top type	Flat Top
Protected	No
Wrap color	Yellow
Performance
Capacity	2600 mAh
Energy	9.36 Wh
Energy density	553.09 Wh/L
Power density (volumetric)	8,509 W/L
Year released	2015

Independent test data: Mooch's test of the 40A 2600mAh ↗

At the standard 1250 mA charge rate, a full charge takes about 2.1 hours. The last bit is a slow taper to top it off.

Voltage operating window

Cutoff
2.5VNominal
3.6VMax charge
4.2V

Usable range: 1.7V

C-rate conversion: AWT 40A 2600mAh (2600mAh)

C-Rate	Current (A)	Theoretical runtime
0.2C	0.52 A	5h 00m
0.5C	1.3 A	2h 00m
1C	2.6 A	1h 00m
2C	5.2 A	30m
3C	7.8 A	20m
5C	13 A	12m
8C	20.8 A	7m 30s
10C	26 A	6m
15C	39 A	4m

Highlighted row is closest to the rated 40A continuous discharge.

Charging

Rate	Current	Estimated time
0.5C	1,300 mA	~2h 00m
1C	2,600 mA	~1h 00m

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

Pack scaling

Series voltage configurations

Config	Nominal V	Max V	Min V	Common use
1S	3.6V	4.2V	2.5V	Flashlights, single-cell devices
2S	7.2V	8.4V	5V	RC vehicles, 7.2V packs
3S	10.8V	12.6V	7.5V	Power tools (10.8V nominal)
4S	14.4V	16.8V	10V	Ebike (small), some power tools
7S	25.2V	29.4V	17.5V	Ebike (24V system)
10S	36V	42V	25V	Ebike (36V system)
13S	46.8V	54.6V	32.5V	Ebike (48V standard)
14S	50.4V	58.8V	35V	Ebike (52V high-power)
16S	57.6V	67.2V	40V	DIY powerwall

Parallel capacity scaling

Config	Capacity	Energy	Max discharge
1P	2,600 mAh	9.4 Wh	40 A
2P	5,200 mAh	18.7 Wh	80 A
3P	7,800 mAh	28.1 Wh	120 A
4P	10,400 mAh	37.4 Wh	160 A
5P	13,000 mAh	46.8 Wh	200 A
6P	15,600 mAh	56.2 Wh	240 A

Example pack configurations

7S2P

24V ebike / small pack

14 cells25.2V nominal5,200mAh131Wh80A max

13S4P

48V ebike standard

52 cells46.8V nominal10,400mAh487Wh160A max

16S4P

DIY powerwall

64 cells57.6V nominal10,400mAh599Wh160A max

4S6P

Power tool replacement

24 cells14.4V nominal15,600mAh225Wh240A max

Design a custom pack with this cell:

Pack Planner →Pack Designer →

Application suitability

PowerwallsHigh capacity means more stored energy per cell. Fewer cells needed for a given kWh target.

Ebike PacksGood balance of capacity for range and discharge for hills. Works well in most ebike packs.

Car AudioEnough discharge to handle amplifier bursts without voltage sag.

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

FlashlightsDecent runtime. Works well for most flashlights.

Power ToolsSufficient discharge and capacity for most power tool packs.

Physical dimensions

Dimensions18.2mm × 65.05mm

TopFlat Top

Format18650

Similar cells

Same format and chemistry, within ±500mAh capacity:

Cell	mAh	CDR	Wh	Weight	Wh/kg
AWT 40A 2600mAh (this cell)	2600	40A	9.36	—	—
Efest EFEST 35A 2900mAh	2900	35A	10.4	—	—
Efest 18650 2800mAh 35A	2800	35A	10.1	46g	219
AWT YELLOW 40A 2600mAh	2600	40A	9.4	—	—
Golisi S26	2600	25A	9.4	46g	203
Xtar XTVTC4	2200	25A	7.9	—	—

Build with this cell

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Frequently asked questions

What is the capacity of the AWT 40A 2600mAh?

What is the maximum discharge rate of the AWT 40A 2600mAh?

How many 40A 2600mAh cells do I need for a 48V ebike battery?

Can I use the 40A 2600mAh for vaping?

What size is the AWT 40A 2600mAh?

Handling and safety

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

Never charge above 4.2V or discharge below 2.5V.
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.