Recommended by Nexus
From compact portable packs to custom power systems, the right charger starts with your battery’s specifications. Find guidance for your Nexus pack’s chemistry, voltage, charge current, and connections.
For rechargeable battery packs. Independent research is strongly recommended.
Different packs. Different requirements. Use your battery’s specifications to guide the charger, settings, and connections.
Confirm the cell’s specified charge voltage
Series count, voltage, and current limits
Main leads, balance wiring, and polarity
Our recommendations
Nexus recommends ISDT based on positive experience within our team and among our customers. These are charger options for compatible packs, rather than a universal list for our entire lineup. For any pack outside their supported limits, ask Nexus for a suitable recommendation.
A bench-friendly option for compatible battery packs, with two independent channels and AC or DC input.
Choose a different compatible model if your pack’s chemistry or series count falls outside the supported range.
A compact single-channel choice for compatible battery packs. Requires a compatible external DC power supply.
Check the exact model revision and power-supply requirements. ISDT lists 1–8S lithium support, while its manual lists a 35V output maximum. Confirm manufacturer compatibility for any setup requiring more than 35V, including an 8S pack rated at 4.45V per cell.
Two independent channels for compatible battery packs, with an integrated AC input and a DC input option.
LiHv and ULiHv are limited to 1–7S. Check the manual for chemistry-specific limits.
An AC-powered dual-channel option for supported higher-voltage packs. Plan the balance connection before purchasing.
ISDT lists 2–16S support but also a 10V minimum output. Obtain manufacturer confirmation for low-voltage packs below that stated range. No dedicated LiIon profile is listed; ask Nexus about a charger explicitly compatible with your Li-ion pack. Uses an 18-pin balance interface.
Before you order: check the exact product revision, included cables, balance adapters, and power supply. A charger’s maximum current is not your pack’s recommended charge current.
Specifications reviewed October 7, 2026 using ISDT documentation. Listings, firmware, and included accessories can change. Retail links open Amazon in a new tab.
Two common charging paths
Choose the charging approach designed for your battery. A matching connector alone does not confirm compatibility.
For a multi-series pack designed to use an external balance charger, connect both the main charge leads and the correctly wired balance connector, following the charger manual. The main leads carry charging current; the balance connection lets the charger monitor and balance individual series groups.
If your pack has a suitable BMS and is designed for charging through its protected charge connection, a compatible battery charger using constant current / constant voltage (CC/CV) may be appropriate. Its voltage, current limit, chemistry, and charge-termination behavior must match the pack specifications. Confirm that the BMS provides the required protection and balancing.
A BMS does not replace a charger. Do not bypass the protected charge path or assume a generic DC supply is suitable because its voltage matches.
Voltage matters
Use the full-charge voltage specified for your exact pack. This reference covers every series count from 1S to 16S for the per-cell charge limits shown.
| Series count | Li-ion / LiPo 4.20V per cell | LiFePO4 3.65V per cell | LiHv 4.35V per cell | ULiHv 4.45V per cell |
|---|---|---|---|---|
| 1S | 4.20V | 3.65V | 4.35V | 4.45V |
| 2S | 8.40V | 7.30V | 8.70V | 8.90V |
| 3S | 12.60V | 10.95V | 13.05V | 13.35V |
| 4S | 16.80V | 14.60V | 17.40V | 17.80V |
| 5S | 21.00V | 18.25V | 21.75V | 22.25V |
| 6S | 25.20V | 21.90V | 26.10V | 26.70V |
| 7S | 29.40V | 25.55V | 30.45V | 31.15V |
| 8S | 33.60V | 29.20V | 34.80V | 35.60V |
| 9S | 37.80V | 32.85V | 39.15V | 40.05V |
| 10S | 42.00V | 36.50V | 43.50V | 44.50V |
| 11S | 46.20V | 40.15V | 47.85V | 48.95V |
| 12S | 50.40V | 43.80V | 52.20V | 53.40V |
| 13S | 54.60V | 47.45V | 56.55V | 57.85V |
| 14S | 58.80V | 51.10V | 60.90V | 62.30V |
| 15S | 63.00V | 54.75V | 65.25V | 66.75V |
| 16S | 67.20V | 58.40V | 69.60V | 71.20V |
Use only the column that matches your cells: pack charge voltage = series groups × the specified per-cell charge-voltage limit. Parallel count affects capacity and current capability, rather than multiplying pack voltage. If your pack specifies a lower charge limit, follow that limit.
These values are conditional reference calculations, not universal settings or a charger compatibility chart. Not every Li-ion or LiPo cell uses 4.20V, and not every LiFePO4 cell or pack specifies 3.65V. Never apply the LiHv or ULiHv voltages to cells that are not explicitly rated for them. Other chemistries and cell limits require their own charging specifications.
Some ISDT manuals list a 4.10V-per-cell default for the LiIon profile. Check the actual charge settings against your cell and pack specifications; do not rely on the profile name alone. Each charger must support the required voltage, chemistry, series count, current settings, and connections.
Before the first charge
A few useful answers
Yes, when each pack falls within the charger’s supported chemistry, series-count range, voltage, and current limits. Verify and select the correct settings for each pack. A higher maximum series count does not guarantee compatibility with every smaller pack.
These models have separate main power outputs and balance ports. Use the main output for charging current and connect the balance harness when using external balance charging, as directed by the manual. Do not treat the balance harness as a substitute for the main charge leads.
Some packs use a shared charge/discharge port; others use separate ports. It depends on the pack wiring and BMS. Use the connection specified for your battery, with the correct polarity and current rating.
No. Nexus’s brand recommendation reflects experience, while compatibility depends on the exact pack and charger. Confirm the chemistry, charge settings, current, series range, and wiring before use.
Send your order number or pack model, chemistry, series/parallel configuration, capacity, maximum charge current, BMS details, and a photo or pinout of the charge and balance connectors.
