batteries 113 in stock

Batteries for Arduino, Raspberry Pi, and maker projects

Single-cell alkaline (AA, AAA, 9V), Li-ion 18650, LiPo packs, coin cells, and battery holders. Stocked locally in Metro Manila — same-day shipping for orders before 4 PM weekdays.

Pick the right chemistry for your build: alkaline for low-current sensors and clocks, LiPo for portable robots and wearables, 18650 for high-current draws like motor drivers, coin cells for tiny embedded boards.

How to choose

Voltage: match the board's input range. Arduino UNO accepts 6–20 V via VIN (7–12 V recommended). ESP32 dev boards usually want 5 V via USB or a 3.3 V regulated supply.
Current: motors, LEDs, and Wi-Fi modules can spike to hundreds of mA. Pick a cell with discharge rating (C-rate or mA) above your peak load.
Capacity (mAh): runtime = capacity ÷ average current. A 2000 mAh pack powering a 100 mA load runs ~20 hours.
Rechargeable vs disposable: Li-ion / LiPo / NiMH save cost long-term; alkaline is fine for one-off builds or low-drain clocks.
Form factor: coin cell (CR2032) for thin boards, AA holders for breadboard projects, 18650 for high-current rigs, LiPo for wearables.

Common chemistries

Alkaline (AA / AAA / 9V): 1.5 V per cell (9 V for PP3). Cheap, shelf-stable, single-use. Best for sensors, clocks, low-drain wearables.
Lithium-ion 18650: 3.7 V nominal, 2000–3500 mAh typical. Rechargeable, high discharge current. Best for motors, robots, power banks.
LiPo (single-cell pouches): 3.7 V nominal, 100–5000 mAh. Flat, light, common in drones and wearables. Needs a protection circuit + balanced charger.
Coin cell (CR2032): 3 V, ~225 mAh. RTC backup, BLE tags, small sensors.
NiMH (rechargeable AA / AAA): 1.2 V per cell. Drop-in replacement for alkaline in many holders.

FAQ

Which battery for Arduino projects?

A 9V PP3 with a barrel-jack adapter works for short demos. For longer runtime, 4×AA in a holder (6 V) or a single Li-ion 18650 (3.7 V) through a boost / regulator is more practical.

How do I power an ESP32 from a battery?

ESP32 dev boards usually have a 5 V USB input + onboard 3.3 V regulator. A single LiPo (3.7 V) into the 5 V pin won't always work — either use a 5 V boost board or a dev board with a built-in LiPo charger (e.g. TinyPICO, Feather).

Can I charge LiPo batteries directly?

No — LiPo / Li-ion cells need a CC/CV charger IC (TP4056 is the cheapest option) to stay within the 4.2 V upper limit. Overcharging causes fire risk. Buy cells with a built-in protection circuit if your charger doesn't have one.

Do you ship lithium batteries nationwide?

Yes — via J&T or LBC ground. Air freight is restricted for loose lithium cells, so provincial orders go by surface delivery (1–3 working days).

How long will a 9V battery last on Arduino?

Roughly 5–10 hours for a bare Arduino UNO running a small sketch (~50 mA). Drops fast if you add a Wi-Fi module, motor, or LCD — under an hour for high-drain projects.

What's your return policy?

7-day inspection window for DOA cells. Email a photo of the issue and we'll ship a replacement or refund. Used / installed batteries aren't returnable unless faulty.

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