LiitoKala Lii-S8 18650 Battery Charger: Specs, Compatible Batteries & Choosing the Right Slot Count

Most 18650 battery chargers handle one chemistry and two or four cells at a time. The LiitoKala Lii-S8 is built for people who need considerably more than that:

• 8 independent charging slots, each managed separately
• 2 dedicated ports for 9V rechargeable batteries, on either side of the display
• Automatic battery-type detection, with a manual current override when you want one
• Up to 2A fast charging on four of the eight slots

This guide covers what the Lii-S8 charges, how fast, how it compares with the smaller Lii-S6 and Lii-D4XL in RAM's lineup, and which of the three actually fits your workload.

Ready to see full details? View the LiitoKala Lii-S8 product page

What Is the LiitoKala Lii-S8?

• An 8-slot smart charger with two additional dedicated 9V ports — 10 charging positions in total.
• Each of the 8 main slots operates independently, so different chemistries and sizes can charge side by side at the same time.
• A microcomputer measures each cell's internal resistance and sets an appropriate charging current automatically.
• You can override that current manually with a long press on the CURRENT button.
• A single LCD shows the charging process; the NEXT and PREV buttons cycle through each slot to read voltage, capacity, percentage and detected battery type.
• An activation function can bring fully drained (0V) cells back to a chargeable state.
• Runs from a DC 12V / 4A input (48W). The box contains the charger, an AC wall adapter and a 12V car adapter.

Compatible Battery Types and Sizes

The Lii-S8 covers five charging profiles in one unit:

On the sizing side:

• Cylindrical Li-ion / IMR / LiFePO4: 26650, 22650, 21700, 20700, 18650, 18490, 18350, 17670, 17500, 17355, 16340 (RCR123), 14500 and 10440.
• Ni-MH / Ni-Cd: A, AA, AAA, SC and C cells.
• Large-format cells such as 32700 fit the bays as well.
• 9V rechargeable Ni-MH blocks go into the two side ports, not the main bays.

Charging Currents and Speed

Charging speed on the Lii-S8 is not uniform across all slots, and it is worth understanding the pattern before you load it up:

1. There are five current levels available: 0.30A, 0.50A, 0.70A, 1.00A and 2.00A.
2. The 2A rate is available on four channels only — slots 1, 3, 6 and 8.
3. All eight slots support 0.3A, 0.5A, 0.7A and 1A.
4. Ni-MH and Ni-Cd charging is fixed at 500mA per slot and is not user-selectable.
5. The two 9V ports charge at a fixed rate of approximately 85mA each.
6. By default the charger picks the current itself based on the measured internal resistance of the cell — a long press on CURRENT lets you change it.

A practical note: the manufacturer's own guidance is to stay within each battery's recommended charging current rather than defaulting to the fastest setting available, and to keep the charger in a ventilated indoor spot while it works.

Safety and Protection Features

Charging several chemistries in one device raises the stakes on protection. The Lii-S8 includes:

• Automatic polarity detection — the cell charges whichever way round it goes in
• Over-charge protection
• Over-current and over-voltage protection
• Short-circuit protection
• Temperature control
• Soft start
• Damaged-cell detection — an abnormal battery or channel shows CH and Err on the display with a red channel indicator
• Automatic cut-off — the battery symbol stays full at 100% and the indicator turns green when charging finishes

Lii-S8 vs Lii-S6 vs Lii-D4XL: Full Comparison

RAM carries three sizes in the LiitoKala charger lineup. The differences run deeper than slot count alone, so here is the full picture:

Three things the table makes clear:

• Slot count and speed are the real dividing line. The Lii-S8 is the only one of the three that charges eight cells at once, and the only one with 2A available on four channels.
• 9V support is not exclusive to the Lii-S8. The Lii-D4XL also carries two 9V ports at the same approximate 85mA rate. If 9V charging is your only requirement, the cheapest unit in the lineup already covers it.
• The Lii-D4XL has one advantage the bigger units do not: a built-in AC power supply, so it plugs straight into the wall with no external 12V brick. It also takes C and D cells, which the Lii-S6 does not.

See full specs and order: LiitoKala Lii-S8 product page

Who Should Buy Each Charger?

• Choose the Lii-S8 if you regularly cycle six or more cells at once — workshops, repair benches, drone and RC users with multiple packs — or if you want the fastest turnaround, since it is the only unit here with four 2A channels and a 48W supply.
• Choose the Lii-S6 if you need mid-range capacity at a lower price and do not need 9V charging or C and D cells. It still gives you 2A on three slots.
• Choose the Lii-D4XL if your volume is lower — a handful of cells for flashlights and small electronics — but you want AC-direct convenience, 9V support, or the ability to charge C and D cells. The trade-off is a 1A ceiling, so each cell takes longer.

Which Batteries to Use With the Lii-S8

A charger is only as good as the cells you put in it. RAM stocks a 3.7V 18650 lithium rechargeable cell that pairs directly with this charger:

The cell is tuned for a steady 1C discharge, which makes it a good fit for electronics that need consistent power rather than high-drain power tools.

View the 3.7V 18650 lithium rechargeable cell 

Two habits worth adopting whatever cells you use:

1. Match the charging current to the cell, not to the charger. A 2A setting is useful for a healthy high-capacity cell and unnecessary stress for a small 14500 or an older, tired one.
2. Take batteries out once the display reads 100% and the indicator turns green, and unplug the charger. Leaving cells sitting in a powered charger indefinitely is the single easiest habit to fix.

Buying the Lii-S8 in Egypt

• All three chargers — Lii-S8, Lii-S6 and Lii-D4XL — are stocked by RAM Electronics and priced in Egyptian pounds.
• The Lii-D4XL runs directly from AC 110–240V, which matches Egyptian mains without an adapter. The Lii-S8 and Lii-S6 use their supplied 12V DC power adapters.
• Prices listed in this guide were correct in August 2026. Check the product page for the current price before ordering.
• You can collect from the RAM store or order for delivery — the product page shows the current options at checkout.

Frequently Asked Questions

Can the Lii-S8 charge different battery types at the same time?

Yes. Each of the 8 main slots operates independently, so Li-ion, LiFePO4 and Ni-MH / Ni-Cd cells can charge simultaneously in different slots.

Which slots support 2A fast charging?

Slots 1, 3, 6 and 8. The other four slots run at 1A or below.

Does this charger work with 9V rechargeable batteries?

Yes — two dedicated 9V Ni-MH ports sit on either side of the display, each charging at approximately 85mA. Worth knowing: the smaller Lii-D4XL also has two 9V ports at the same rate. The Lii-S6 is not listed by the manufacturer as supporting 9V.

What is the difference between the Lii-S8 and the Lii-S6?

• Slots: 8 versus 6.
• Fast charging: 2A on four channels versus three.
• Power supply: 48W versus 36W.
• 9V: the Lii-S8 has two dedicated ports; the Lii-S6 does not list 9V support.
• Shared ground: both cover the same Li-ion, IMR, LiFePO4 and Ni-MH / Ni-Cd chemistries in the main slots.

Do I need to set the charging current manually?

No. The charger measures each cell's internal resistance and selects a current on its own. A long press on the CURRENT button lets you override it if you prefer a specific rate.

Can it recover a battery that has drained completely?

The Lii-S8 has a 0V activation function that can bring a fully drained cell back to a chargeable state. It is not a guarantee — a cell that has been flat for a long time may be past saving.

What comes in the box?

The charger unit, an AC wall power adapter, and a 12V car adapter for charging on the move.

Ready to upgrade your charging setup?

Shop the LiitoKala Lii-S8 now

Or browse the full Batteries & Chargers collection for more charging options.