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Voltage Matching Guide for Lithium-ion & LiFePO4 & Lead-Acid Batteries (1S~26S)

  • 2026-07-09
  • By mevke
Voltage Matching Guide for Lithium-ion & LiFePO4 & Lead-Acid Batteries (1S~26S)

Voltage Chart: Lithium-ion / LiFePO4 / Lead-Acid Cells (1S ~ 26S)

Standard cell parameters:

  • Lithium-ion (NCM/LCO): Nominal 3.7V, Full charge cut-off 4.20V per cell

  • LiFePO4: Nominal 3.2V, Full charge cut-off 3.65V per cell

  • Lead-Acid: Nominal 2.0V, Equalizing charge voltage 2.35V per cell

Cell SeriesLithium-ion
(Nominal / Charge Voltage)		LiFePO4
(Nominal / Charge Voltage)		Lead-Acid
(Nominal / Equalizing Charge Voltage)
1S3.7V / 4.20V3.2V / 3.65V2.0V / 2.35V
2S7.4V / 8.40V6.4V / 7.30V4.0V / 4.70V
3S11.1V / 12.60V9.6V / 10.95V6.0V / 7.05V
4S14.8V / 16.80V12.8V / 14.60V8.0V / 9.40V
5S18.5V / 21.00V16.0V / 18.25V10.0V / 11.75V
6S22.2V / 25.20V19.2V / 21.90V12.0V / 14.10V
7S25.9V / 29.40V22.4V / 25.55V14.0V / 16.45V
8S29.6V / 33.60V25.6V / 29.20V16.0V / 18.80V
9S33.3V / 37.80V28.8V / 32.85V18.0V / 21.15V
10S37.0V / 42.00V32.0V / 36.50V20.0V / 23.50V
11S40.7V / 46.20V35.2V / 40.15V22.0V / 25.85V
12S44.4V / 50.40V38.4V / 43.80V24.0V / 28.20V
13S48.1V / 54.60V41.6V / 47.45V26.0V / 30.55V
14S51.8V / 58.80V44.8V / 51.10V28.0V / 32.90V
15S55.5V / 63.00V48.0V / 54.75V30.0V / 35.25V
16S59.2V / 67.20V51.2V / 58.40V32.0V / 37.60V
17S62.9V / 71.40V54.4V / 62.05V34.0V / 39.95V
18S66.6V / 75.60V57.6V / 65.70V36.0V / 42.30V
19S70.3V / 79.80V60.8V / 69.35V38.0V / 44.65V
20S74.0V / 84.00V64.0V / 73.00V40.0V / 47.00V
21S77.7V / 88.20V67.2V / 76.65V42.0V / 49.35V
22S81.4V / 92.40V70.4V / 80.30V44.0V / 51.70V
23S85.1V / 96.60V73.6V / 83.95V46.0V / 54.05V
24S88.8V / 100.80V76.8V / 87.60V48.0V / 56.40V
25S92.5V / 105.00V80.0V / 91.25V50.0V / 58.75V
26S96.2V / 109.20V83.2V / 94.90V52.0V / 61.10V

Supplementary Explanations (For Foreign Trade & Charger Selection Reference)

  1. Common E-Bike Voltage Matching

  • 36V lithium-ion pack = 10S (Nominal 37V, full charge 42V)

  • 48V lithium-ion pack = 13S (Nominal 48.1V, full charge 54.6V)

  • 60V lithium-ion pack = 16S (Nominal 59.2V, full charge 67.2V)

  • 72V lithium-ion pack = 20S (Nominal 74V, full charge 84V)

  1. LiFePO4 Matching Reference

  • Standard 48V LiFePO4 pack = 15S (Nominal 48V, full charge 54.75V; some manufacturers adopt 54.6V for compatibility)

  • Standard 60V LiFePO4 pack = 19S (Nominal 60.8V, full charge 69.35V)

  1. Lead-Acid Battery Notes

  • Single lead-acid cell nominal voltage: 2V; the mainstream 12V lead-acid battery consists of 6 cells in series.

  • Two charging modes: Equalizing charge (2.35V per cell) and Float charge (2.25V per cell). This table adopts equalizing charge voltage.

  • Typical charging voltage for 12V lead-acid battery: 14.1~14.4V (6 cells × 2.35~2.4V per cell)


  • Matching Chargers We Supply

  • 42V 2A Charger: For 10S NCM lithium-ion batteries (36V class e-bikes)

  • 54.6V 2A Charger: For 13S NCM lithium-ion batteries (48V class e-bikes)

  • 58.8V 2A Charger: For 14S NCM lithium-ion batteries

  • 67.2V 2A Charger: For 16S NCM lithium-ion batteries (60V class e-bikes)


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