How to Balance-Charge a LiPo Pack Without Guessing
Balance-charge a LiPo pack by connecting the main lead and the balance lead, then setting the cell count and charge rate on the charger. A balance charger charges each cell to 4.2 V and stops when all cells match. Use 1C as the charge rate, so a 2200 mAh pack charges at 2.2 A.
Quick facts
| Fact | Value |
|---|---|
| Full cell voltage | 4.2 V |
| Storage voltage | 3.8 V per cell |
| Charge rate rule | 1C (2.2 A for a 2200 mAh pack) |
| B6 charger | 80 W max charge, 0.1 to 6.0 A |
| B6neo 2 charger | 300 W DC, 0.2 to 15.0 A |
| X4 charger | 500 W total, 15 A per channel |
| B3 Pro charger | 2S and 3S packs |
| Balance current, B6neo 2 | Max 550 mA |
| Balance current, X4 | 1.2 A per cell max |
What does balance charging do?
A balance charger charges each cell in a pack to 4.2 V and keeps the cells matched.
Without a balance lead, one cell can drift high while another stays low.
A cell that reads under 3.0 V is over-discharged and needs care before you charge it.
Store packs at 3.8 V per cell when you are done flying for the day.
How do you set the charge rate?
Use 1C as the charge rate, which means the current in amps equals the capacity in amp-hours.
A 2200 mAh pack charges at 2.2 A, and a 5000 mAh pack charges at 5.0 A.
The B6 charger tops out at 6.0 A, so it covers 1C charging for packs up to 6000 mAh.
The B6neo 2 runs 0.2 to 15.0 A, and the X4 runs up to 15 A on each of its 4 channels.
Which charger fits your packs?
The B3 Pro covers 2S and 3S packs for $15.99 when you need a compact charger.
The B6 charger handles 1 to 6 LiPo cells at up to 80 W and costs $49.99 with the 12V 5A US adapter.
The B6neo 2 charges 1 to 6 cell LiPo, LiFe, Li-ion, and LiHV packs at 300 W DC and costs $84.99 with the US plug.
The X4 charges four packs at once with 500 W total AC power and costs $182.99.
What is balance current and why does it matter?
Balance current is the current the charger moves between cells to even them out.
The B6neo 2 balances at up to 550 mA, which suits packs with small cell drift.
The X4 balances at up to 1.2 A per cell, so it evens out a drifted pack faster.
A charger with higher balance current saves time when cells drift apart after hard flights.
What did we check on the bench?
We matched every price in this guide to the live store price on November 12, 2026.
We checked the B6neo 2 listing states 300 W DC input, 80 W PD input, and 0.2 to 15.0 A charge current.
We checked the X4 listing states 500 W total power, 15 A per channel, and a 3.5 inch IPS display.
How the options compare
| Charger | Max power | Charge current | Cells | Price |
|---|---|---|---|---|
| B3 Pro balance charger | Not listed | Not listed | 2S and 3S | $15.99 |
| B6 80W balance charger | 80 W | 0.1 to 6.0 A | 1 to 6 LiPo cells | $49.99 |
| B6neo 2 smart charger | 300 W DC, 80 W PD | 0.2 to 15.0 A | 1 to 6 cells | $84.99 |
| X4 4-channel charger | 500 W total AC | Up to 15 A per channel | 1 to 6S | $182.99 |
How do you balance-charge a LiPo pack in 6 steps?
- Check each cell voltage on the charger display before you start.
- Connect the main lead to the charger output.
- Connect the balance lead to the balance port.
- Set the battery type to LiPo and the cell count to match the pack.
- Set the charge rate to 1C for the pack capacity.
- Start the charge and stop when the charger shows every cell at 4.2 V.
Parts that fit this guide
In-stock parts ship from the New York, USA warehouse in 1-2 business days. Prices below are the live store prices we verified on November 12, 2026.
B6 80W Digital Balance Charger, T/Tamiya/XT60 Plug ($49.99)
B6 80W digital balance charger at $49.99 with the 12V 5A US adapter. It balance charges 1 to 6 LiPo cells at up to 80 W. Charge current runs 0.1 to 6.0 A, and input runs 11 to 18 V.
B6neo 2 Smart Charger, DC 300W / PD 80W ($84.99)
B6neo 2 smart charger at $84.99 with the US plug. It charges LiPo, LiFe, Li-ion, and LiHV packs of 1 to 6 cells at 0.2 to 15.0 A. DC input runs 300 W, and USB PD input runs 80 W.
X4 4-Channel Smart LiPo Charger, AC 500W ($182.99)
X4 4-channel smart charger at $182.99. It charges four packs at once with 500 W total AC power and up to 15 A per channel. Balance current runs 1.2 A per cell max.
ImaxRC B3 Pro Balance Charger (2S/3S) ($15.99)
ImaxRC B3 Pro balance charger at $15.99. It charges 2S and 3S LiPo packs and suits a compact bench check.
Shop the full range: Batteries & Chargers at Quality RC Parts. See also: Related guide.
Frequently asked questions
What voltage does a balance charger stop at?
A balance charger stops when every cell reads 4.2 V. The charger evens the cells out during the charge so none goes past 4.2 V.
Can I charge a LiPo without the balance lead?
You can, but the cells can drift apart over time. Always connect the balance lead so each cell is checked and evened out.
What charge rate should I use?
Use 1C as the charge rate. A 2200 mAh pack charges at 2.2 A, and a 5000 mAh pack charges at 5.0 A.
How many packs can the X4 charge at once?
The X4 charges four packs at once, one per channel. Each channel runs up to 15 A, and total power is 500 W.
Sources
- Battery University: Charging Lithium-Ion Batteries (BU-409)
- Oscar Liang: LiPo Battery Guide
- FAA: Lithium Batteries
Last updated: November 12, 2026.