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Home Battery Backup & Expansion Batteries

ALLWEI PPS2400 bundles with one to four B200 PRO expansion batteries (4kWh to 10kWh) and the B200 PRO battery on its own, compared by capacity and price.

Home Battery Backup & Expansion Batteries reviews

How to choose Home Battery Backup & Expansion Batteries

Every listing here builds on ALLWEI's PPS2400, a power station that lists 2048Wh of battery and a 2400W AC output, plus B200 PRO expansion batteries that add capacity. Watt-hours (Wh) are the energy stored, and 1kWh is 1,000Wh; watts (W) are how much it can deliver at once. More batteries raise the Wh, but the AC output stays the station's: all four bundles list 2400W with a 4800W peak. So ask first whether your largest load fits under 2400W, then how many hours you want. The bundles are titled up to 4kWh, 6kWh, 8kWh and 10kWh for one to four B200 PRO batteries and were listed at $1,579, $2,279, $2,979 and $3,679 on October 23, 2026. The battery alone was listed from $599 for 2048Wh, with a 4096Wh option at $1,198.

The listings are thin where it matters. The bundle pages give a capacity only in their titles. The B200 PRO's own page lists 2048Wh per battery (40Ah at 51.2V), LiFePO4 cells, which is lithium iron phosphate, and 3500 cycles to 70% or more of capacity; these are ALLWEI's own figures, and we found no independent test. The PPS2400 page says up to four batteries take the total to 10240Wh. The bundle pages give 51 lb for the station and the battery page 40.8 lb for its 2048Wh unit, so no page states a stack's weight. Charging is listed for the station: AC 1500W Max, solar 500W Max, and car 120W Max at 12V or 240W Max at 24V. The B200 PRO page gives no output rating, ports or connecting cable. The bundle pages call the AC output pure sine wave, which follows the smooth waveform of grid power.

All five are sold by ALLWEI at allweipower.com. Shipping is free by ground carrier within the contiguous US only; orders ship in 1 to 2 business days and arrive in 3 to 7. Returns run 30 days from receipt for an unused product in its original packaging, with an RMA number from support; you pay return shipping unless it is a quality issue, and the refund follows within 14 business days of inspection. The warranty page lists 3 years from purchase plus 3 more with registration, but its table labels the extra years 'Paid'. The store shows crossed-out regular prices and promo banners without saying whether the price shown already includes them.

Look elsewhere if you need a page that says what is in the box. The bundle pages call the B200 PRO 'sold separately' in their copy while their option names include one to four of them, and the In The Box section is blank, so confirm with ALLWEI that the batteries and the connecting cable ship in the bundle. The pages do not say whether a bundle costs less than buying the station and batteries separately, so compare the listings. Two bundle pages list a 30A TT-30R outlet while their FAQ gives the AC output current as 20-24A and says a 30A socket triggers current protection.

Guide updated October 25, 2026, from the reviews on this page and the store terms they cite.

At a glance

ReviewPriceStated capacityAC outputRecharge
ALLWEI B200 PRO Expansion BatteryFrom $599LiFePO4 2048Wh +/-5% (40Ah/51.2V); a 4096Wh option is also listed——
ALLWEI PPS2400 + 1 B200 PRO (4kWh)$1,579Title says up to 4kWh; the copy says 2048Wh up to 10240Wh with B200 PRO batteries3 outlets at 120V: 2400W, peak 4800W; plus 1 TT-30R outlet, AC120V/30A MaxAC 1500W Max, solar 500W Max, car 12V/120W Max or 24V/240W Max
ALLWEI PPS2400 + 2 B200 PRO (6kWh)$2,279Title says up to 6kWh; the copy says a PPS2400 takes up to 4 B200 PRO batteries (10240Wh)Pure sine wave, 120V, 60Hz, 2400W, peak 4800W; TT-30R outlet AC120V/30A MaxQ Mode 1.5 hours per the copy; AC input 1500W Max, solar input 500W Max
ALLWEI PPS2400 + 3 B200 PRO (8kWh)$2,979Title says up to 8kWh; the page says up to 4 B200 PRO batteries and 10240Wh in total3 AC outlets listed at 2400W with a 4800W peak, plus 1 TT-30R at AC120V/30A MaxAC 1500W Max, solar 500W Max; Q Mode 1.5 hours per the copy
ALLWEI PPS2400 + 4 B200 PRO (10kWh)$3,6792048Wh station; up to 10240Wh with 4 add-on packs, per the page copy3 outputs listed: 120V, 60Hz, 2400W, peak 4800W; plus 1 TT-30R, AC120V/30A maxAC 1500W max, solar 500W max, car 12V/120W or 24V/240W max

Figures are the stores' own, as each review lists them.

Questions before you buy

How much battery capacity do I need for home backup?

Capacity is in watt-hours: divide it by the watts of what you plan to power for a rough number of hours. The PPS2400 holds 2048Wh, and ALLWEI's titles say up to 4kWh with one B200 PRO battery, 6kWh with two, 8kWh with three and 10kWh with four; the PPS2400 page gives 10240Wh in total. None of the pages gives run times, and the capacity figures are the store's own.

What can a PPS2400 battery backup power at once?

The bundle pages list 3 AC outlets at 120V with 2400W continuous and a 4800W peak, plus a TT-30R outlet rated 120V/30A Max, and say a device above 2400W triggers over-load protection. Two pages' FAQs give the AC output current as 20-24A and say a 30A socket triggers current protection, which does not match the outlet's 30A rating. We found no page describing a connection to a home's electrical panel.

How many B200 PRO batteries can a PPS2400 take?

Up to 4, for 10240Wh in total, according to the pages; the bundles name 1, 2, 3 or 4. The B200 PRO page lists 2048Wh and a 4096Wh option at $1,198 but does not say whether that is two units or give its weight. Its only fit statement is 'for PPS2400 Power Stations' in the title, and pass-through charging is listed as supported.

How fast does a PPS2400 battery backup recharge?

The pages list AC input of 1500W Max, solar input of 500W Max, and car input of 120W Max at 12V or 240W Max at 24V. The copy says Q Mode recharges in 1.5 hours and reaches 0 to 80% in 60 minutes by AC, but these times are written for the PPS2400 and the pages do not say how they change with added batteries.

Do the bundles come with the batteries and cables?

The pages do not settle it. Each option name includes the B200 PRO batteries, yet the copy calls the B200 PRO 'sold separately', and the In The Box section is blank. The connecting cable the FAQ mentions is not confirmed as included. Ask ALLWEI for the contents in writing before ordering.

What are ALLWEI's return and warranty terms for these?

Returns run 30 days from receipt for an unused product in its original packaging, with proof of purchase and an RMA number; you pay return shipping unless it is a quality issue. Cancelling after an order ships costs round-trip shipping plus a 2.6% card fee. The warranty is 3 years from purchase plus 3 more with registration, with the extra years labeled 'Paid' in the store's table.