Flagship
Supercapacitor energy transfer, controlled from your phone
Bluetooth-enabled active balancers for 2S–24S lithium packs. A supercapacitor inside the balancer is charged by the strongest cell and discharged into the weakest one, repeatedly, until the pack is within your target delta-voltage. Balance current is set independently of cell delta-voltage, so a 300Ah pack balances just as hard as a 30Ah one.
Mechanism: Time-sharing single-channel transfer — point-to-point energy transfer through an onboard supercapacitor.
4 A NEEY-24S4A · 2S – 24S
The entry point to app-controlled active balancing. 4 A of constant current through an onboard supercapacitor, ±1 mV cell acquisition, and a 140 × 128 mm board that fits most scooter and small-storage packs.
8 A NEEY-24S8A · 2S – 24S
Double the current of the 4A on almost the same footprint, and the first model in the range with a TTL port so the balancer can report to an external controller or charger.
10 A NEEY-24S10A · 2S – 24S
The 24S8A’s feature set at 10 A, in a slightly larger 166 × 157 mm board with heavier copper. Suited to 50 Ah–200 Ah traction and storage packs.
15 A NEEY-24S15A · 2S – 24S
The biggest balancer we build: 15 A of app-settable current, a 40S cascade example in the manual, and an over-balancing guard that halves the current automatically when the pack is already close to balanced.
| Specification | NEEY-24S4A 2S – 24S | NEEY-24S8A 2S – 24S | NEEY-24S10A 2S – 24S | NEEY-24S15A 2S – 24S |
|---|---|---|---|---|
| Balance current | Adjustable in app: 1 A – 4 A | Adjustable in app: 1 A – 8 A | Adjustable in app: 1 A – 10 A | Adjustable in app: 1 A – 15 A |
| Cell count by chemistry | Li-ion 7S–24S · LiFePO4 8S–24S · LTO 12S–24S · sodium-ion 12S–24S | Li-ion 3S–24S · LiFePO4 4S–24S · LTO 7S–24S · sodium-ion 7S–24S | Li-ion 3S–24S · LiFePO4 4S–24S · LTO 7S–24S · sodium-ion 7S–24S | Li-ion 3S–24S · LiFePO4 4S–24S · LTO 7S–24S · sodium-ion 7S–24S |
| Power input | DC 25 V – 100 V, or battery powered | DC 12 V – 100 V, or battery powered | DC 12 V – 100 V, or battery powered | DC 12 V – 120 V, or battery powered |
| TTL bus | Not available on this model | Yes — 115200 baud, 8N1, master–slave protocol | Yes — 115200 baud, 8N1, master–slave protocol | Yes — 115200 baud, 8N1, master–slave protocol |
| Dimensions | L140 × W128 × T22 mm | L156 × W144 × T28 mm | L166 × W157 × T26 mm | L313 × W193 × T43 mm |
| Weight | 247 g (board) · 470 g (packed) | 810 g (packed) | 810 g (packed) | 2530 g |