12V 30Ah Mini LiFePO4 Battery with DC Port, 30A BMS with Low Temp Cut-Off, BCI Group U1, 4000+ Cycles, Replace Deep Cycles 12V 20Ah/35Ah for Electric Wheelchair, Ham Radio, Golf Trolley, Mobility Scooters, Ham Radio, Trolling Motor, Camping, Marine Boat,F

Lead-Acid Replacement

Product Overview

Inside the case sits a 12.8V, 30Ah lithium iron phosphate pack — 384Wh — managed by a 30A battery management board and sealed into a black BCI Group U1 housing. The top face carries M5 screw posts and a covered DC port, and there is no liquid electrolyte to top up, no venting to arrange and no equalising charge to remember. At 6.61 lb it comes out of a scooter seat box or a boat locker in one hand and goes back in the same way.

If you are taking out a 12V 20Ah or 35Ah lead-acid block, the label will look smaller and the performance will not. This 12v deep cycle battery holds its voltage across the discharge instead of sagging away in the last third, so the machine keeps pulling when a tired 35Ah block would already be fading — and even a fresh lead-acid block only reaches its rating on a slow, shallow draw. It is a lithium deep cycle battery built for steady, moderate current over hours — the duty a scooter motor, a caddy drive or a small trolling motor actually asks for, and exactly what a deep cycle trolling motor battery is built for.

Key Features

• 30A BMS protection — every charge and discharge runs through a board that cuts off on over-charge, over-discharge, over-current, short circuit and out-of-range cell temperature, so one long session cannot quietly ruin the pack.
• Low-temperature charge cut-off — in freezing weather the BMS stops charging instead of pushing current into cold cells, and restarts the charge once the pack has warmed up.
• Rated for deep cycling — this 12 volt deep cycle battery takes thousands of full discharges and has a quoted service life of up to 10 years, so the case does not have to come out every couple of seasons.
• A covered DC port on the top face — run a fish finder, a spotlight or a radio set straight off the pack instead of wiring it into the machine, and keep the rubber cover on the socket when nothing is plugged in.
• Screw terminals with the screws in the box — the M5 posts take standard ring terminals, so your existing cables usually bolt straight on without adapters.
• Matched A-class cells — the cells are graded and matched before assembly, so one weak cell cannot drag the rest of the pack down.
• Lift it out to charge — the pack is light enough to unclip and carry indoors, which beats running an extension lead out to a cold shed.

Fitting & Terminals

1. Match the voltage first — where the machine runs on a 12 volt deep cycle battery now, one unit goes straight in; a 24V chair or scooter takes two in series.
2. Measure the old block before you order — length, width and height of the case coming out. This deep cycle lithium battery is built on the Group U1 case, the size most 20Ah to 35Ah blocks in scooters, chairs and caddies already use.
3. Check what it has to pass through, not just what it sits on. Seat boxes, camper step-wells and boat lockers are often tighter than the tray inside them, so measure the opening before the old deep cycle rv battery comes out.
4. Compare the terminal layout — posts at the same end and roughly the same spacing mean your cables reach without being extended or rerouted.
5. Check the hold-down — most machines use a strap or a bracket over the top, and the flat Group U1 lid gives it something to sit on without a reinforced tray.
6. Choose the orientation — with no liquid inside, the case can stand upright, lie on its side or sit in a compartment a lead-acid block could never use. Just keep the terminals clear of metal.
7. Tighten the M5 screws firmly with a screwdriver rather than a power driver, and leave headroom above the case so the DC plug can go in and out with the cover still attached.

Applications

• Mobility scooters and electric wheelchairs — the case drops into the battery bay the old block came out of, and a 24V chair simply takes two units in series.
• Golf trolleys and caddies — a full round plus the walk back to the clubhouse sits comfortably inside a 30Ah pack, and the battery can be carried to the car afterwards instead of being left in the boot.
• Trolling motors — a deep cycle trolling motor battery is asked for a steady, moderate current for hours at a time, and a 12V motor on a small boat or tender is the classic use for this size.
• Fish finders, ham radio and 12V accessories — the covered DC port runs a sonar unit, a radio set or a work light without a separate socket, which is handy in a boat, a shack or a tent.
• Boats and tenders — as a 12v deep cycle marine battery for electronics, lights and a small trolling motor, the sealed case shrugs off spray and lives happily in a locker.
• Motorhomes, caravans and camping — a deep cycle rv battery for lights, a water pump, a phone charger and a small inverter when you are parked up, in a locker that a taller case would not fit.
• Solar, off-grid and emergency lighting — a small panel with a suitable charge controller tops it up between trips, and the same pack keeps lights or a gate opener running when the mains is out.
• Not for engine starting — motorcycles, jet skis, snowmobiles and UPS backups need a battery that can dump hundreds of amps in a second. Put this one in a starter circuit and the BMS will trip the moment the motor turns over.

Specifications

Charging, Cold Weather & Care

Charge with a lithium profile. This 12v lifepo4 battery wants a 12V LiFePO4-compatible charger that stops at the pack's cut-off; a lead-acid charger with an equalise or desulfation stage will run the voltage past what the cells accept, the BMS will disconnect mid-charge, and it will look like a failure when it is the protection doing its job. Charge after each trip rather than running the pack flat and leaving it, and if the machine is going into storage for a season, leave it part charged rather than empty.

Cold weather is handled in two stages, and this deep cycle lithium battery handles both itself. Below -7 °C (19.4 °F) the BMS stops accepting charge, so an overnight charge in an unheated shed pauses instead of damaging the cells, and it resumes once the pack is back above 0 °C (32 °F). Discharge keeps working down to -20 °C (-4 °F), which covers a frosty morning on the water or a scooter left outside. Where you can, bring the pack indoors to charge in freezing weather — it charges faster and lasts longer.

Keep the connections dry. A 12v deep cycle marine battery that lives in a damp locker or on an open trailer benefits from a smear of terminal grease, tight terminal screws and the rubber DC port cover closed whenever nothing is plugged in. Salt air and damp air attack terminals long before they attack the case.

Ordering & Delivery

1. Match the count to the machine — one 12 volt deep cycle battery covers any 12V scooter, wheelchair, caddy or accessory setup; two are only needed when the machine itself runs at 24V.
2. Check your charger before ordering — if you are moving off lead-acid, tell us the model you have and we will say whether it suits a LiFePO4 pack.
3. Tell us the machine and the old battery size if you are unsure of the fit, and we will tell you yes or no before the order goes ahead.
4. Stock orders normally leave the warehouse in 3–7 days, and delivery from local stock takes a further 3–7 days. Custom builds take about 35 days in production.
5. Every lithium deep cycle battery is checked and packed before dispatch and carries a 5-year warranty. Tell us what went wrong and how it is being used, and our team will work through the fault with you.
6. Have the basics ready before it lands — a compatible charger, ring terminals that match your cable ends and a screwdriver for the M5 posts.

About Our Company

Xinyubattery is the brand of Shenzhenshi Xinyu Newenergy Technology Co.,LTD, a Shenzhen-based company founded in 2016 and working in green power solutions for more than ten years. Through a vetted network of production partners, we bring a broad range of power products together in one place and consolidate each order for you. Products are checked before dispatch, packed for export and shipped from local stock, and our team stays available for technical advice, fitting questions and after-sales help.

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