Liitokala Engineer Lii-500 4-Slot LCD Smart Universal Battery Tester Charger

The Liitokala Lii-500 is a 4-slot smart battery tester and charger for rechargeable batteries, according to the product listing. It suits hobbyists, workshop users and households in Bangladesh that run flashlights, cameras and RC toys, and want to see how much charge each cell still holds.

• Overview of the Liitokala Lii-500
• Key features
• Specifications
• How to use and set up the Liitokala Lii-500
• Compatibility and what is in the box
• Who should buy it in Bangladesh
• Alternatives in our store
• Warranty and support
• Delivery, returns and ordering
• Frequently asked questions

Overview of the Liitokala Lii-500 smart charger

The Liitokala Lii-500 is described in its listing as a versatile and highly efficient 4-slot smart battery charger and tester. The maker lists it for a wide range of rechargeable batteries, from Li-ion cells such as 18650 and 26650 to AA and AAA sizes used in many household devices. For a buyer in Bangladesh, that range means one unit can look after torch cells, camera batteries and toy packs instead of several single-purpose chargers.

The appeal of the Liitokala Lii-500 is monitoring as much as charging. The LCD screen is listed as showing voltage, current, capacity, resistance and elapsed charging time, so you can see what each cell is doing rather than guessing. That is useful during load-shedding, when a torch that looked charged may turn out to be flat. Checking your cells before the lights go out saves time and frustration.

Humidity is a practical concern in Bangladesh, so storage matters. The listing includes a Storage mode that prepares batteries for long-term storage by optimising their charge level, which suits spare cells kept in a drawer for weeks. For general background on how chargers work, see the Wikipedia explainer on battery chargers. The maker describes the Liitokala Lii-500 for hobbyists, professionals and anyone needing reliable battery maintenance and monitoring. The listing does not define professional use, so judge the fit against your own workload before you buy.

Key features

Wide battery compatibility

The listing says the Liitokala Lii-500 supports a variety of battery types, including Ni-MH, Ni-CD and Li-ion batteries. It names sizes such as 18650, 26650, 14500, 16340, AA and AAA, and adds ‘and more’. For Bangladeshi households this matters, because one charger can handle the cells in a torch, a camera and a toy without a separate unit for each. Because ‘and more’ does not name every size, confirm your battery size before you order.

Four independent slots

According to the listing, each of the four slots operates independently. That means you can charge a Li-ion cell in one bay, test an AA in another and run a different job in a third at the same time. Mixed batches are common in Bangladeshi homes, where one household may keep AA cells for a remote, 18650 cells for a torch and a few AAA cells for a clock. Separate slots keep those groups apart, so one slow job does not hold up the rest. The Liitokala Lii-500 is most useful when you have several batteries to manage at once.

LCD display and readings

The listing describes a clear LCD screen that shows real-time information, including voltage, current, capacity, resistance and elapsed charging time. It also says the detailed display makes the Liitokala Lii-500 easy to use, even for beginners. Capacity and resistance readings help you judge whether an older cell still holds its charge or has become weak. Read the figures in context, and compare several cells of the same type to spot the one that stands out from the rest.

Charge, test and storage modes

The listing describes four modes. Charge mode charges batteries efficiently and safely. Fast Test mode quickly checks battery capacity. Nor Test mode performs a full charge-discharge cycle to determine the actual battery capacity. Storage mode prepares batteries for long-term storage by optimising their charge level. Use Fast Test for a quick check before a trip, and Nor Test when you need a fuller answer, knowing that it takes longer because it runs a complete cycle. The Liitokala Lii-500 lets you pick the job for each slot.

Adjustable charging current

The listing offers charging currents of 300mA, 500mA, 700mA and 1000mA, which the maker says cater to various battery specifications and user needs. As a general rule, a lower current is gentler on a cell and suits a battery you want to top up slowly, while a higher current suits a cell you need back in use sooner. Check the rating printed on your battery before you choose a setting, and follow the battery maker’s guidance. Choosing the right current for each slot is part of getting the most from every cell in the Liitokala Lii-500.

Safety protections and USB output

The listing says the Liitokala Lii-500 has overcharge, over-discharge, short circuit and reverse polarity protection, plus temperature monitoring to prevent overheating during charging. It also has a USB output port, listed at 5V and 1000mA, so it can act as a power bank when loaded with charged batteries. In a Dhaka summer, when rooms are hot and humid, the temperature monitoring is worth knowing about. Keep the unit ventilated while it runs and do not cover it with cloth.

Specifications

These are listed specifications from the product listing.

How to use and set up the Liitokala Lii-500

Start with the power supply. The listing gives the input as DC 12V/2A, so use a source that matches that rating before you connect the Liitokala Lii-500. Do not substitute an adapter with a different voltage. Place the unit on a flat, dry surface with space around it, because the listing includes temperature monitoring and heat needs room to escape during longer sessions. The listed dimensions are 162mm x 96mm x 36mm, so check that you have that much room on your table or shelf.

Next, insert each battery with its polarity matched to the markings in the slot. Reverse polarity protection is listed as a safeguard, but it is not a reason to guess. Choose the battery type (Ni-MH, Ni-CD or Li-ion), the size and the charging current for that slot. If you are new to the Liitokala Lii-500, start with one slot to learn the display before you load all four bays.

Pick the mode for the job. For a routine charge, use Charge mode. To check a cell quickly, use Fast Test. When you need the actual capacity, use Nor Test and allow time for the full cycle. Before you put cells away for a month or more, use Storage mode so that their charge level is prepared for storage.

Read the LCD during each run and watch voltage, current, capacity, resistance and elapsed time. If you test the same cells regularly, note the figures in your phone, so you can see how a battery ages over several months. A simple log is the easiest way to spot a cell that is losing capacity on your Liitokala Lii-500.

When a run finishes, compare the capacity figure with the rating printed on the cell. A cell that reads far below its label may be nearing the end of its useful life, although the listing does not explain how every reading should be interpreted.

To use the unit as a power bank, load charged cells and connect a device to the USB output, which is listed at 5V and 1000mA. Check that your phone or gadget accepts that output before you rely on it, and do not expect a long runtime from a few AA cells.

During load-shedding, charge spare cells before an outage rather than during one, because the unit needs its 12V DC supply to run. Keep a few charged AA or AAA cells for torches and emergency lights, so a power cut in the evening does not leave you searching in the dark. A Liitokala Lii-500 charged in daylight or before evening gives you a ready set of cells when the power goes.

Care and storage: keep the charger in a dry place away from direct heat, and keep the slots clean and free of dust. During humid months, a closed cabinet with a silica gel pack can help, but do not seal the charger in a box while it is running.

A simple routine helps. Test cells before a trip, charge them after use, and store any cells you will not use soon. Repeating the same steps each month makes the readings easier to compare from one run to the next.

Compatibility and what is in the box

The listing confirms compatibility with Ni-MH, Ni-CD and Li-ion batteries, and with 18650, 26650, 14500, 16340, AA and AAA sizes, plus ‘and more’. A size that is not named may not be covered, and that is not confirmed by the listing.

The listing does not state what is in the box for the Liitokala Lii-500. The power adapter, cables and any carry case are not named in the listing, so ask us before ordering if you need a specific set.

The listing does not mention an app, a menu language or a maximum runtime for the USB output, so this page does not describe them. Nor does it give a battery capacity range for the unit itself.

The unit is described for rechargeable batteries. The listing does not describe use with non-rechargeable cells, so ask us before you try one in any slot.

The listing names flashlights, cameras, RC toys and other battery-powered devices as examples of what the batteries power. Those examples describe the devices, not what the charger itself runs, and the charger’s own supply is the 12V DC input listed above.

For mixed sizes, match each cell to its slot’s settings and keep a note of which size goes where. That habit stops 18650 and 26650 cells from being mixed up during a busy evening with the Liitokala Lii-500.

Who should buy it in Bangladesh

Hobbyists who run torches, cameras and RC toys will get the most from the Liitokala Lii-500, because four slots and several modes let them match each battery to its job. Keeping a mix of 18650, AA and AAA cells charged and tested in one place saves repeated trips to a shop.

Households and small shops in Dhaka and other cities that rely on torches and emergency lights during load-shedding. A display that shows voltage and capacity helps you know which cells are strong before the lights go out, and a set of spare cells kept charged gives you a dependable backup.

Commuters and students who carry a power bank. When the cells are charged, the USB output listed at 5V and 1000mA can top up a phone in a pinch. A Liitokala Lii-500 used this way is a backup option rather than a substitute for a dedicated power bank for heavy daily use.

Anyone storing spare cells through humid months. Storage mode prepares cells for long-term storage, and a periodic check with the display can show which ones need attention before you need them.

Buyers who want a straightforward tool. The listing describes simple controls and a detailed display, so you can start with one slot and add others as you learn. If you only charge a couple of AA cells a month, the Liitokala Lii-500 may be more charger than you need, and a smaller option may suit you better. We can help you choose.

Owners of a few battery-powered gadgets in a family home. A single unit with four slots keeps the cells for a remote, a torch and a toy in one place, and the LCD readings help you rotate them so that no pack is left flat when you need it most.

Alternatives in our store

If the Liitokala Lii-500 does not fit your setup, look at the other options in our store. For another 4-slot charger from the same brand, see the Liitokala Lii M4S 4-Slot Multifunctional Battery Charger. If you need a replacement battery for a phone rather than a charger, see the Hoco J112 iPx Smart Li-Polymer 2716mAh iPhone X Battery. For AA cells to pair with a charger like this, see the SmarToools RB20 AA 1.5V 2600mWh Rechargeable Battery (2 Pcs Set), and for AAA cells see the SmarToools RB20 AAA 1.5V 750 mWh Rechargeable Battery (2 Pcs Set). You can also browse the full range in our Batteries & Chargers category.

Warranty and support

Warranty: 7 Days seller warranty.

Delivery, returns and ordering

We deliver all over Bangladesh and you pay cash on delivery. Delivery usually takes 1–3 days inside Dhaka city and 2–5 days outside Dhaka. Ordering the Liitokala Lii-500 is straightforward once you have confirmed the battery sizes you plan to use.

You can return it within 7 days of delivery (see our Delivery & Returns policy). Questions before ordering: call 09638054751, message us on Facebook Messenger or email care@gadgetsuperb.com.

Policy page: https://gadgetsuperb.com/delivery-returns/

Frequently asked questions

What is the Liitokala Lii-500?

The Liitokala Lii-500 is a 4-slot smart universal battery tester and charger with an LCD screen, according to the listing. It charges, tests and stores rechargeable batteries in four independent slots.

Which battery types does the Liitokala Lii-500 support?

The listing names Ni-MH, Ni-CD and Li-ion batteries. Check that your cells are one of these types before you load them.

Which battery sizes fit the Liitokala Lii-500?

The listing gives 18650, 26650, 14500, 16340, AA and AAA, and says ‘and more’. If your size is not named, ask us before you order.

What is the difference between Fast Test and Nor Test?

Fast Test quickly checks battery capacity, while Nor Test performs a full charge-discharge cycle to determine the actual capacity. Use Nor Test when you need a fuller answer.

Can I charge and test different batteries at the same time?

Yes, according to the listing. Each of the four slots operates independently, so different types and sizes can run together on the Liitokala Lii-500.

Can the Liitokala Lii-500 work as a power bank?

The listing says it doubles as a power bank when loaded with charged batteries, with a USB output of 5V and 1000mA. Check that your device accepts that output before you rely on it.

Is there a manual for the Liitokala Lii-500?

The listing does not mention a manual, and a manual is not confirmed by the listing. Email care@gadgetsuperb.com or message us on Facebook Messenger to ask.

How does the Liitokala Lii-500 compare with the Lii-600?

The listing gives no details of the Lii-600, so this page makes no comparison. Compare the modes, sizes and currents in the specifications above with the other model’s listing.

What is the warranty on the Liitokala Lii-500?

Warranty: 7 Days seller warranty. Ask us if you need help with a question about the warranty before you order.

Do you deliver outside Dhaka, and can I pay on delivery?

Yes, we deliver all over Bangladesh and you pay cash on delivery. Delivery usually takes 2–5 days outside Dhaka, and 1–3 days inside Dhaka city.

Where can I ask questions before ordering?

Call 09638054751, message us on Facebook Messenger or email care@gadgetsuperb.com. These are the contact details in our store policy.