How many lithium batteries do I need for a 48 volt golf cart?
A 48V golf cart typically requires one lithium battery pack designed for 48V systems, eliminating the need for multiple batteries. Pre-assembled 48V LiFePO4 packs (e.g., 48V 100Ah) integrate 15–16 cells (3.2V each) in series, paired with a BMS for safety. For custom setups, 16x 3.2V LiFePO4 cells wired in series achieve 51.2V nominal, closely matching 48V requirements. Pro Tip: Always verify compatibility with your cart’s motor controller to avoid voltage mismatches.
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Why use a single 48V lithium battery instead of multiple units?
Modern lithium packs consolidate voltage needs into one unit. Unlike lead-acid setups requiring 4–8 batteries, lithium solutions use series-connected cells within a single enclosure. This reduces wiring complexity, weight (by 50–70%), and maintenance. For example, a Roypow 48V 100Ah lithium battery replaces eight 6V lead-acid batteries while delivering 5kWh usable energy.
How do cell configurations affect 48V lithium packs?
LiFePO4 cells dominate golf cart applications due to their 3.2V nominal voltage and 3,000–5,000 cycle life. Sixteen cells in series create 51.2V (16×3.2V), which aligns with 48V systems’ tolerance (42–58.4V operational). Pro Tip: Opt for prismatic cells over cylindrical ones—they offer better thermal stability for high-drain cart motors.
| Configuration | Voltage | Typical Use |
|---|---|---|
| 15S LiFePO4 | 48V | Budget builds |
| 16S LiFePO4 | 51.2V | Standard packs |
| 14S NMC | 51.8V | High-performance |
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FAQs
Yes, if your cart’s voltage range supports 42–58.4V. Ensure the lithium pack’s dimensions fit your battery tray and its BMS handles peak motor currents.
Do 48V lithium packs require special chargers?
Yes—use LiFePO4-specific chargers with 54.8–58.4V output. Lead-acid chargers risk undercharging or damaging cells due to incorrect voltage profiles.